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Add key to send a break to the serial line
[st.git] / st.c
1 /* See LICENSE for license details. */
2 #include <ctype.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <limits.h>
6 #include <locale.h>
7 #include <pwd.h>
8 #include <stdarg.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <signal.h>
13 #include <stdint.h>
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
16 #include <sys/stat.h>
17 #include <sys/time.h>
18 #include <sys/types.h>
19 #include <sys/wait.h>
20 #include <termios.h>
21 #include <time.h>
22 #include <unistd.h>
23 #include <libgen.h>
24 #include <X11/Xatom.h>
25 #include <X11/Xlib.h>
26 #include <X11/Xutil.h>
27 #include <X11/cursorfont.h>
28 #include <X11/keysym.h>
29 #include <X11/Xft/Xft.h>
30 #include <X11/XKBlib.h>
31 #include <fontconfig/fontconfig.h>
32 #include <wchar.h>
33
34 #include "arg.h"
35
36 char *argv0;
37
38 #define Glyph Glyph_
39 #define Font Font_
40
41 #if defined(__linux)
42 #include <pty.h>
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
44 #include <util.h>
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
46 #include <libutil.h>
47 #endif
48
49
50 /* XEMBED messages */
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
53
54 /* Arbitrary sizes */
55 #define UTF_INVALID 0xFFFD
56 #define UTF_SIZ 4
57 #define ESC_BUF_SIZ (128*UTF_SIZ)
58 #define ESC_ARG_SIZ 16
59 #define STR_BUF_SIZ ESC_BUF_SIZ
60 #define STR_ARG_SIZ ESC_ARG_SIZ
61 #define XK_ANY_MOD UINT_MAX
62 #define XK_NO_MOD 0
63 #define XK_SWITCH_MOD (1<<13)
64
65 /* macros */
66 #define MIN(a, b) ((a) < (b) ? (a) : (b))
67 #define MAX(a, b) ((a) < (b) ? (b) : (a))
68 #define LEN(a) (sizeof(a) / sizeof(a)[0])
69 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
70 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
71 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
72 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
73 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
74 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
75 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
76 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
77 (a).bg != (b).bg)
78 #define IS_SET(flag) ((term.mode & (flag)) != 0)
79 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
80 (t1.tv_nsec-t2.tv_nsec)/1E6)
81 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
82
83 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
84 #define IS_TRUECOL(x) (1 << 24 & (x))
85 #define TRUERED(x) (((x) & 0xff0000) >> 8)
86 #define TRUEGREEN(x) (((x) & 0xff00))
87 #define TRUEBLUE(x) (((x) & 0xff) << 8)
88
89
90 enum glyph_attribute {
91 ATTR_NULL = 0,
92 ATTR_BOLD = 1 << 0,
93 ATTR_FAINT = 1 << 1,
94 ATTR_ITALIC = 1 << 2,
95 ATTR_UNDERLINE = 1 << 3,
96 ATTR_BLINK = 1 << 4,
97 ATTR_REVERSE = 1 << 5,
98 ATTR_INVISIBLE = 1 << 6,
99 ATTR_STRUCK = 1 << 7,
100 ATTR_WRAP = 1 << 8,
101 ATTR_WIDE = 1 << 9,
102 ATTR_WDUMMY = 1 << 10,
103 ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
104 };
105
106 enum cursor_movement {
107 CURSOR_SAVE,
108 CURSOR_LOAD
109 };
110
111 enum cursor_state {
112 CURSOR_DEFAULT = 0,
113 CURSOR_WRAPNEXT = 1,
114 CURSOR_ORIGIN = 2
115 };
116
117 enum term_mode {
118 MODE_WRAP = 1 << 0,
119 MODE_INSERT = 1 << 1,
120 MODE_APPKEYPAD = 1 << 2,
121 MODE_ALTSCREEN = 1 << 3,
122 MODE_CRLF = 1 << 4,
123 MODE_MOUSEBTN = 1 << 5,
124 MODE_MOUSEMOTION = 1 << 6,
125 MODE_REVERSE = 1 << 7,
126 MODE_KBDLOCK = 1 << 8,
127 MODE_HIDE = 1 << 9,
128 MODE_ECHO = 1 << 10,
129 MODE_APPCURSOR = 1 << 11,
130 MODE_MOUSESGR = 1 << 12,
131 MODE_8BIT = 1 << 13,
132 MODE_BLINK = 1 << 14,
133 MODE_FBLINK = 1 << 15,
134 MODE_FOCUS = 1 << 16,
135 MODE_MOUSEX10 = 1 << 17,
136 MODE_MOUSEMANY = 1 << 18,
137 MODE_BRCKTPASTE = 1 << 19,
138 MODE_PRINT = 1 << 20,
139 MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
140 |MODE_MOUSEMANY,
141 };
142
143 enum charset {
144 CS_GRAPHIC0,
145 CS_GRAPHIC1,
146 CS_UK,
147 CS_USA,
148 CS_MULTI,
149 CS_GER,
150 CS_FIN
151 };
152
153 enum escape_state {
154 ESC_START = 1,
155 ESC_CSI = 2,
156 ESC_STR = 4, /* DCS, OSC, PM, APC */
157 ESC_ALTCHARSET = 8,
158 ESC_STR_END = 16, /* a final string was encountered */
159 ESC_TEST = 32, /* Enter in test mode */
160 };
161
162 enum window_state {
163 WIN_VISIBLE = 1,
164 WIN_FOCUSED = 2
165 };
166
167 enum selection_mode {
168 SEL_IDLE = 0,
169 SEL_EMPTY = 1,
170 SEL_READY = 2
171 };
172
173 enum selection_type {
174 SEL_REGULAR = 1,
175 SEL_RECTANGULAR = 2
176 };
177
178 enum selection_snap {
179 SNAP_WORD = 1,
180 SNAP_LINE = 2
181 };
182
183 typedef unsigned char uchar;
184 typedef unsigned int uint;
185 typedef unsigned long ulong;
186 typedef unsigned short ushort;
187
188 typedef uint_least32_t Rune;
189
190 typedef XftDraw *Draw;
191 typedef XftColor Color;
192
193 typedef struct {
194 Rune u; /* character code */
195 ushort mode; /* attribute flags */
196 uint32_t fg; /* foreground */
197 uint32_t bg; /* background */
198 } Glyph;
199
200 typedef Glyph *Line;
201
202 typedef struct {
203 Glyph attr; /* current char attributes */
204 int x;
205 int y;
206 char state;
207 } TCursor;
208
209 /* CSI Escape sequence structs */
210 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
211 typedef struct {
212 char buf[ESC_BUF_SIZ]; /* raw string */
213 int len; /* raw string length */
214 char priv;
215 int arg[ESC_ARG_SIZ];
216 int narg; /* nb of args */
217 char mode[2];
218 } CSIEscape;
219
220 /* STR Escape sequence structs */
221 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
222 typedef struct {
223 char type; /* ESC type ... */
224 char buf[STR_BUF_SIZ]; /* raw string */
225 int len; /* raw string length */
226 char *args[STR_ARG_SIZ];
227 int narg; /* nb of args */
228 } STREscape;
229
230 /* Internal representation of the screen */
231 typedef struct {
232 int row; /* nb row */
233 int col; /* nb col */
234 Line *line; /* screen */
235 Line *alt; /* alternate screen */
236 int *dirty; /* dirtyness of lines */
237 XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
238 TCursor c; /* cursor */
239 int top; /* top scroll limit */
240 int bot; /* bottom scroll limit */
241 int mode; /* terminal mode flags */
242 int esc; /* escape state flags */
243 char trantbl[4]; /* charset table translation */
244 int charset; /* current charset */
245 int icharset; /* selected charset for sequence */
246 int numlock; /* lock numbers in keyboard */
247 int *tabs;
248 } Term;
249
250 /* Purely graphic info */
251 typedef struct {
252 Display *dpy;
253 Colormap cmap;
254 Window win;
255 Drawable buf;
256 Atom xembed, wmdeletewin, netwmname, netwmpid;
257 XIM xim;
258 XIC xic;
259 Draw draw;
260 Visual *vis;
261 XSetWindowAttributes attrs;
262 int scr;
263 int isfixed; /* is fixed geometry? */
264 int l, t; /* left and top offset */
265 int gm; /* geometry mask */
266 int tw, th; /* tty width and height */
267 int w, h; /* window width and height */
268 int ch; /* char height */
269 int cw; /* char width */
270 char state; /* focus, redraw, visible */
271 int cursor; /* cursor style */
272 } XWindow;
273
274 typedef struct {
275 uint b;
276 uint mask;
277 char *s;
278 } Mousekey;
279
280 typedef struct {
281 KeySym k;
282 uint mask;
283 char *s;
284 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
285 signed char appkey; /* application keypad */
286 signed char appcursor; /* application cursor */
287 signed char crlf; /* crlf mode */
288 } Key;
289
290 typedef struct {
291 int mode;
292 int type;
293 int snap;
294 /*
295 * Selection variables:
296 * nb – normalized coordinates of the beginning of the selection
297 * ne – normalized coordinates of the end of the selection
298 * ob – original coordinates of the beginning of the selection
299 * oe – original coordinates of the end of the selection
300 */
301 struct {
302 int x, y;
303 } nb, ne, ob, oe;
304
305 char *primary, *clipboard;
306 Atom xtarget;
307 int alt;
308 struct timespec tclick1;
309 struct timespec tclick2;
310 } Selection;
311
312 typedef union {
313 int i;
314 uint ui;
315 float f;
316 const void *v;
317 } Arg;
318
319 typedef struct {
320 uint mod;
321 KeySym keysym;
322 void (*func)(const Arg *);
323 const Arg arg;
324 } Shortcut;
325
326 /* function definitions used in config.h */
327 static void clipcopy(const Arg *);
328 static void clippaste(const Arg *);
329 static void numlock(const Arg *);
330 static void selpaste(const Arg *);
331 static void xzoom(const Arg *);
332 static void xzoomabs(const Arg *);
333 static void xzoomreset(const Arg *);
334 static void printsel(const Arg *);
335 static void printscreen(const Arg *) ;
336 static void toggleprinter(const Arg *);
337 static void sendbreak(const Arg *);
338
339 /* Config.h for applying patches and the configuration. */
340 #include "config.h"
341
342 /* Font structure */
343 typedef struct {
344 int height;
345 int width;
346 int ascent;
347 int descent;
348 short lbearing;
349 short rbearing;
350 XftFont *match;
351 FcFontSet *set;
352 FcPattern *pattern;
353 } Font;
354
355 /* Drawing Context */
356 typedef struct {
357 Color col[MAX(LEN(colorname), 256)];
358 Font font, bfont, ifont, ibfont;
359 GC gc;
360 } DC;
361
362 static void die(const char *, ...);
363 static void draw(void);
364 static void redraw(void);
365 static void drawregion(int, int, int, int);
366 static void execsh(void);
367 static void stty(void);
368 static void sigchld(int);
369 static void run(void);
370
371 static void csidump(void);
372 static void csihandle(void);
373 static void csiparse(void);
374 static void csireset(void);
375 static int eschandle(uchar);
376 static void strdump(void);
377 static void strhandle(void);
378 static void strparse(void);
379 static void strreset(void);
380
381 static int tattrset(int);
382 static void tprinter(char *, size_t);
383 static void tdumpsel(void);
384 static void tdumpline(int);
385 static void tdump(void);
386 static void tclearregion(int, int, int, int);
387 static void tcursor(int);
388 static void tdeletechar(int);
389 static void tdeleteline(int);
390 static void tinsertblank(int);
391 static void tinsertblankline(int);
392 static int tlinelen(int);
393 static void tmoveto(int, int);
394 static void tmoveato(int, int);
395 static void tnew(int, int);
396 static void tnewline(int);
397 static void tputtab(int);
398 static void tputc(Rune);
399 static void treset(void);
400 static void tresize(int, int);
401 static void tscrollup(int, int);
402 static void tscrolldown(int, int);
403 static void tsetattr(int *, int);
404 static void tsetchar(Rune, Glyph *, int, int);
405 static void tsetscroll(int, int);
406 static void tswapscreen(void);
407 static void tsetdirt(int, int);
408 static void tsetdirtattr(int);
409 static void tsetmode(int, int, int *, int);
410 static void tfulldirt(void);
411 static void techo(Rune);
412 static void tcontrolcode(uchar );
413 static void tdectest(char );
414 static int32_t tdefcolor(int *, int *, int);
415 static void tdeftran(char);
416 static inline int match(uint, uint);
417 static void ttynew(void);
418 static void ttyread(void);
419 static void ttyresize(void);
420 static void ttysend(char *, size_t);
421 static void ttywrite(const char *, size_t);
422 static void tstrsequence(uchar);
423
424 static inline ushort sixd_to_16bit(int);
425 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
426 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
427 static void xdrawglyph(Glyph, int, int);
428 static void xhints(void);
429 static void xclear(int, int, int, int);
430 static void xdrawcursor(void);
431 static void xinit(void);
432 static void xloadcols(void);
433 static int xsetcolorname(int, const char *);
434 static int xgeommasktogravity(int);
435 static int xloadfont(Font *, FcPattern *);
436 static void xloadfonts(char *, double);
437 static void xsettitle(char *);
438 static void xresettitle(void);
439 static void xsetpointermotion(int);
440 static void xseturgency(int);
441 static void xsetsel(char *, Time);
442 static void xtermclear(int, int, int, int);
443 static void xunloadfont(Font *);
444 static void xunloadfonts(void);
445 static void xresize(int, int);
446
447 static void expose(XEvent *);
448 static void visibility(XEvent *);
449 static void unmap(XEvent *);
450 static char *kmap(KeySym, uint);
451 static void kpress(XEvent *);
452 static void cmessage(XEvent *);
453 static void cresize(int, int);
454 static void resize(XEvent *);
455 static void focus(XEvent *);
456 static void brelease(XEvent *);
457 static void bpress(XEvent *);
458 static void bmotion(XEvent *);
459 static void propnotify(XEvent *);
460 static void selnotify(XEvent *);
461 static void selclear(XEvent *);
462 static void selrequest(XEvent *);
463
464 static void selinit(void);
465 static void selnormalize(void);
466 static inline int selected(int, int);
467 static char *getsel(void);
468 static void selcopy(Time);
469 static void selscroll(int, int);
470 static void selsnap(int *, int *, int);
471 static int x2col(int);
472 static int y2row(int);
473 static void getbuttoninfo(XEvent *);
474 static void mousereport(XEvent *);
475
476 static size_t utf8decode(char *, Rune *, size_t);
477 static Rune utf8decodebyte(char, size_t *);
478 static size_t utf8encode(Rune, char *);
479 static char utf8encodebyte(Rune, size_t);
480 static char *utf8strchr(char *s, Rune u);
481 static size_t utf8validate(Rune *, size_t);
482
483 static ssize_t xwrite(int, const char *, size_t);
484 static void *xmalloc(size_t);
485 static void *xrealloc(void *, size_t);
486 static char *xstrdup(char *);
487
488 static void usage(void);
489
490 static void (*handler[LASTEvent])(XEvent *) = {
491 [KeyPress] = kpress,
492 [ClientMessage] = cmessage,
493 [ConfigureNotify] = resize,
494 [VisibilityNotify] = visibility,
495 [UnmapNotify] = unmap,
496 [Expose] = expose,
497 [FocusIn] = focus,
498 [FocusOut] = focus,
499 [MotionNotify] = bmotion,
500 [ButtonPress] = bpress,
501 [ButtonRelease] = brelease,
502 /*
503 * Uncomment if you want the selection to disappear when you select something
504 * different in another window.
505 */
506 /* [SelectionClear] = selclear, */
507 [SelectionNotify] = selnotify,
508 /*
509 * PropertyNotify is only turned on when there is some INCR transfer happening
510 * for the selection retrieval.
511 */
512 [PropertyNotify] = propnotify,
513 [SelectionRequest] = selrequest,
514 };
515
516 /* Globals */
517 static DC dc;
518 static XWindow xw;
519 static Term term;
520 static CSIEscape csiescseq;
521 static STREscape strescseq;
522 static int cmdfd;
523 static pid_t pid;
524 static Selection sel;
525 static int iofd = 1;
526 static char **opt_cmd = NULL;
527 static char *opt_io = NULL;
528 static char *opt_title = NULL;
529 static char *opt_embed = NULL;
530 static char *opt_class = NULL;
531 static char *opt_font = NULL;
532 static char *opt_line = NULL;
533 static int oldbutton = 3; /* button event on startup: 3 = release */
534
535 static char *usedfont = NULL;
536 static double usedfontsize = 0;
537 static double defaultfontsize = 0;
538
539 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
540 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
541 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
542 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
543
544 /* Font Ring Cache */
545 enum {
546 FRC_NORMAL,
547 FRC_ITALIC,
548 FRC_BOLD,
549 FRC_ITALICBOLD
550 };
551
552 typedef struct {
553 XftFont *font;
554 int flags;
555 Rune unicodep;
556 } Fontcache;
557
558 /* Fontcache is an array now. A new font will be appended to the array. */
559 static Fontcache frc[16];
560 static int frclen = 0;
561
562 ssize_t
563 xwrite(int fd, const char *s, size_t len)
564 {
565 size_t aux = len;
566 ssize_t r;
567
568 while (len > 0) {
569 r = write(fd, s, len);
570 if (r < 0)
571 return r;
572 len -= r;
573 s += r;
574 }
575
576 return aux;
577 }
578
579 void *
580 xmalloc(size_t len)
581 {
582 void *p = malloc(len);
583
584 if (!p)
585 die("Out of memory\n");
586
587 return p;
588 }
589
590 void *
591 xrealloc(void *p, size_t len)
592 {
593 if ((p = realloc(p, len)) == NULL)
594 die("Out of memory\n");
595
596 return p;
597 }
598
599 char *
600 xstrdup(char *s)
601 {
602 if ((s = strdup(s)) == NULL)
603 die("Out of memory\n");
604
605 return s;
606 }
607
608 size_t
609 utf8decode(char *c, Rune *u, size_t clen)
610 {
611 size_t i, j, len, type;
612 Rune udecoded;
613
614 *u = UTF_INVALID;
615 if (!clen)
616 return 0;
617 udecoded = utf8decodebyte(c[0], &len);
618 if (!BETWEEN(len, 1, UTF_SIZ))
619 return 1;
620 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
621 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
622 if (type != 0)
623 return j;
624 }
625 if (j < len)
626 return 0;
627 *u = udecoded;
628 utf8validate(u, len);
629
630 return len;
631 }
632
633 Rune
634 utf8decodebyte(char c, size_t *i)
635 {
636 for (*i = 0; *i < LEN(utfmask); ++(*i))
637 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
638 return (uchar)c & ~utfmask[*i];
639
640 return 0;
641 }
642
643 size_t
644 utf8encode(Rune u, char *c)
645 {
646 size_t len, i;
647
648 len = utf8validate(&u, 0);
649 if (len > UTF_SIZ)
650 return 0;
651
652 for (i = len - 1; i != 0; --i) {
653 c[i] = utf8encodebyte(u, 0);
654 u >>= 6;
655 }
656 c[0] = utf8encodebyte(u, len);
657
658 return len;
659 }
660
661 char
662 utf8encodebyte(Rune u, size_t i)
663 {
664 return utfbyte[i] | (u & ~utfmask[i]);
665 }
666
667 char *
668 utf8strchr(char *s, Rune u)
669 {
670 Rune r;
671 size_t i, j, len;
672
673 len = strlen(s);
674 for (i = 0, j = 0; i < len; i += j) {
675 if (!(j = utf8decode(&s[i], &r, len - i)))
676 break;
677 if (r == u)
678 return &(s[i]);
679 }
680
681 return NULL;
682 }
683
684 size_t
685 utf8validate(Rune *u, size_t i)
686 {
687 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
688 *u = UTF_INVALID;
689 for (i = 1; *u > utfmax[i]; ++i)
690 ;
691
692 return i;
693 }
694
695 void
696 selinit(void)
697 {
698 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
699 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
700 sel.mode = SEL_IDLE;
701 sel.ob.x = -1;
702 sel.primary = NULL;
703 sel.clipboard = NULL;
704 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
705 if (sel.xtarget == None)
706 sel.xtarget = XA_STRING;
707 }
708
709 int
710 x2col(int x)
711 {
712 x -= borderpx;
713 x /= xw.cw;
714
715 return LIMIT(x, 0, term.col-1);
716 }
717
718 int
719 y2row(int y)
720 {
721 y -= borderpx;
722 y /= xw.ch;
723
724 return LIMIT(y, 0, term.row-1);
725 }
726
727 int
728 tlinelen(int y)
729 {
730 int i = term.col;
731
732 if (term.line[y][i - 1].mode & ATTR_WRAP)
733 return i;
734
735 while (i > 0 && term.line[y][i - 1].u == ' ')
736 --i;
737
738 return i;
739 }
740
741 void
742 selnormalize(void)
743 {
744 int i;
745
746 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
747 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
748 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
749 } else {
750 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
751 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
752 }
753 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
754 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
755
756 selsnap(&sel.nb.x, &sel.nb.y, -1);
757 selsnap(&sel.ne.x, &sel.ne.y, +1);
758
759 /* expand selection over line breaks */
760 if (sel.type == SEL_RECTANGULAR)
761 return;
762 i = tlinelen(sel.nb.y);
763 if (i < sel.nb.x)
764 sel.nb.x = i;
765 if (tlinelen(sel.ne.y) <= sel.ne.x)
766 sel.ne.x = term.col - 1;
767 }
768
769 int
770 selected(int x, int y)
771 {
772 if (sel.mode == SEL_EMPTY)
773 return 0;
774
775 if (sel.type == SEL_RECTANGULAR)
776 return BETWEEN(y, sel.nb.y, sel.ne.y)
777 && BETWEEN(x, sel.nb.x, sel.ne.x);
778
779 return BETWEEN(y, sel.nb.y, sel.ne.y)
780 && (y != sel.nb.y || x >= sel.nb.x)
781 && (y != sel.ne.y || x <= sel.ne.x);
782 }
783
784 void
785 selsnap(int *x, int *y, int direction)
786 {
787 int newx, newy, xt, yt;
788 int delim, prevdelim;
789 Glyph *gp, *prevgp;
790
791 switch (sel.snap) {
792 case SNAP_WORD:
793 /*
794 * Snap around if the word wraps around at the end or
795 * beginning of a line.
796 */
797 prevgp = &term.line[*y][*x];
798 prevdelim = ISDELIM(prevgp->u);
799 for (;;) {
800 newx = *x + direction;
801 newy = *y;
802 if (!BETWEEN(newx, 0, term.col - 1)) {
803 newy += direction;
804 newx = (newx + term.col) % term.col;
805 if (!BETWEEN(newy, 0, term.row - 1))
806 break;
807
808 if (direction > 0)
809 yt = *y, xt = *x;
810 else
811 yt = newy, xt = newx;
812 if (!(term.line[yt][xt].mode & ATTR_WRAP))
813 break;
814 }
815
816 if (newx >= tlinelen(newy))
817 break;
818
819 gp = &term.line[newy][newx];
820 delim = ISDELIM(gp->u);
821 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
822 || (delim && gp->u != prevgp->u)))
823 break;
824
825 *x = newx;
826 *y = newy;
827 prevgp = gp;
828 prevdelim = delim;
829 }
830 break;
831 case SNAP_LINE:
832 /*
833 * Snap around if the the previous line or the current one
834 * has set ATTR_WRAP at its end. Then the whole next or
835 * previous line will be selected.
836 */
837 *x = (direction < 0) ? 0 : term.col - 1;
838 if (direction < 0) {
839 for (; *y > 0; *y += direction) {
840 if (!(term.line[*y-1][term.col-1].mode
841 & ATTR_WRAP)) {
842 break;
843 }
844 }
845 } else if (direction > 0) {
846 for (; *y < term.row-1; *y += direction) {
847 if (!(term.line[*y][term.col-1].mode
848 & ATTR_WRAP)) {
849 break;
850 }
851 }
852 }
853 break;
854 }
855 }
856
857 void
858 getbuttoninfo(XEvent *e)
859 {
860 int type;
861 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
862
863 sel.alt = IS_SET(MODE_ALTSCREEN);
864
865 sel.oe.x = x2col(e->xbutton.x);
866 sel.oe.y = y2row(e->xbutton.y);
867 selnormalize();
868
869 sel.type = SEL_REGULAR;
870 for (type = 1; type < LEN(selmasks); ++type) {
871 if (match(selmasks[type], state)) {
872 sel.type = type;
873 break;
874 }
875 }
876 }
877
878 void
879 mousereport(XEvent *e)
880 {
881 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
882 button = e->xbutton.button, state = e->xbutton.state,
883 len;
884 char buf[40];
885 static int ox, oy;
886
887 /* from urxvt */
888 if (e->xbutton.type == MotionNotify) {
889 if (x == ox && y == oy)
890 return;
891 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
892 return;
893 /* MOUSE_MOTION: no reporting if no button is pressed */
894 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
895 return;
896
897 button = oldbutton + 32;
898 ox = x;
899 oy = y;
900 } else {
901 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
902 button = 3;
903 } else {
904 button -= Button1;
905 if (button >= 3)
906 button += 64 - 3;
907 }
908 if (e->xbutton.type == ButtonPress) {
909 oldbutton = button;
910 ox = x;
911 oy = y;
912 } else if (e->xbutton.type == ButtonRelease) {
913 oldbutton = 3;
914 /* MODE_MOUSEX10: no button release reporting */
915 if (IS_SET(MODE_MOUSEX10))
916 return;
917 if (button == 64 || button == 65)
918 return;
919 }
920 }
921
922 if (!IS_SET(MODE_MOUSEX10)) {
923 button += ((state & ShiftMask ) ? 4 : 0)
924 + ((state & Mod4Mask ) ? 8 : 0)
925 + ((state & ControlMask) ? 16 : 0);
926 }
927
928 if (IS_SET(MODE_MOUSESGR)) {
929 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
930 button, x+1, y+1,
931 e->xbutton.type == ButtonRelease ? 'm' : 'M');
932 } else if (x < 223 && y < 223) {
933 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
934 32+button, 32+x+1, 32+y+1);
935 } else {
936 return;
937 }
938
939 ttywrite(buf, len);
940 }
941
942 void
943 bpress(XEvent *e)
944 {
945 struct timespec now;
946 Mousekey *mk;
947
948 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
949 mousereport(e);
950 return;
951 }
952
953 for (mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
954 if (e->xbutton.button == mk->b
955 && match(mk->mask, e->xbutton.state)) {
956 ttysend(mk->s, strlen(mk->s));
957 return;
958 }
959 }
960
961 if (e->xbutton.button == Button1) {
962 clock_gettime(CLOCK_MONOTONIC, &now);
963
964 /* Clear previous selection, logically and visually. */
965 selclear(NULL);
966 sel.mode = SEL_EMPTY;
967 sel.type = SEL_REGULAR;
968 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
969 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
970
971 /*
972 * If the user clicks below predefined timeouts specific
973 * snapping behaviour is exposed.
974 */
975 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
976 sel.snap = SNAP_LINE;
977 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
978 sel.snap = SNAP_WORD;
979 } else {
980 sel.snap = 0;
981 }
982 selnormalize();
983
984 if (sel.snap != 0)
985 sel.mode = SEL_READY;
986 tsetdirt(sel.nb.y, sel.ne.y);
987 sel.tclick2 = sel.tclick1;
988 sel.tclick1 = now;
989 }
990 }
991
992 char *
993 getsel(void)
994 {
995 char *str, *ptr;
996 int y, bufsize, lastx, linelen;
997 Glyph *gp, *last;
998
999 if (sel.ob.x == -1)
1000 return NULL;
1001
1002 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
1003 ptr = str = xmalloc(bufsize);
1004
1005 /* append every set & selected glyph to the selection */
1006 for (y = sel.nb.y; y <= sel.ne.y; y++) {
1007 linelen = tlinelen(y);
1008
1009 if (sel.type == SEL_RECTANGULAR) {
1010 gp = &term.line[y][sel.nb.x];
1011 lastx = sel.ne.x;
1012 } else {
1013 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
1014 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
1015 }
1016 last = &term.line[y][MIN(lastx, linelen-1)];
1017 while (last >= gp && last->u == ' ')
1018 --last;
1019
1020 for ( ; gp <= last; ++gp) {
1021 if (gp->mode & ATTR_WDUMMY)
1022 continue;
1023
1024 ptr += utf8encode(gp->u, ptr);
1025 }
1026
1027 /*
1028 * Copy and pasting of line endings is inconsistent
1029 * in the inconsistent terminal and GUI world.
1030 * The best solution seems like to produce '\n' when
1031 * something is copied from st and convert '\n' to
1032 * '\r', when something to be pasted is received by
1033 * st.
1034 * FIXME: Fix the computer world.
1035 */
1036 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
1037 *ptr++ = '\n';
1038 }
1039 *ptr = 0;
1040 return str;
1041 }
1042
1043 void
1044 selcopy(Time t)
1045 {
1046 xsetsel(getsel(), t);
1047 }
1048
1049 void
1050 propnotify(XEvent *e)
1051 {
1052 XPropertyEvent *xpev;
1053 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1054
1055 xpev = &e->xproperty;
1056 if (xpev->state == PropertyNewValue &&
1057 (xpev->atom == XA_PRIMARY ||
1058 xpev->atom == clipboard)) {
1059 selnotify(e);
1060 }
1061 }
1062
1063 void
1064 selnotify(XEvent *e)
1065 {
1066 ulong nitems, ofs, rem;
1067 int format;
1068 uchar *data, *last, *repl;
1069 Atom type, incratom, property;
1070
1071 incratom = XInternAtom(xw.dpy, "INCR", 0);
1072
1073 ofs = 0;
1074 if (e->type == SelectionNotify) {
1075 property = e->xselection.property;
1076 } else if(e->type == PropertyNotify) {
1077 property = e->xproperty.atom;
1078 } else {
1079 return;
1080 }
1081 if (property == None)
1082 return;
1083
1084 do {
1085 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
1086 BUFSIZ/4, False, AnyPropertyType,
1087 &type, &format, &nitems, &rem,
1088 &data)) {
1089 fprintf(stderr, "Clipboard allocation failed\n");
1090 return;
1091 }
1092
1093 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
1094 /*
1095 * If there is some PropertyNotify with no data, then
1096 * this is the signal of the selection owner that all
1097 * data has been transferred. We won't need to receive
1098 * PropertyNotify events anymore.
1099 */
1100 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
1101 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1102 &xw.attrs);
1103 }
1104
1105 if (type == incratom) {
1106 /*
1107 * Activate the PropertyNotify events so we receive
1108 * when the selection owner does send us the next
1109 * chunk of data.
1110 */
1111 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
1112 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
1113 &xw.attrs);
1114
1115 /*
1116 * Deleting the property is the transfer start signal.
1117 */
1118 XDeleteProperty(xw.dpy, xw.win, (int)property);
1119 continue;
1120 }
1121
1122 /*
1123 * As seen in getsel:
1124 * Line endings are inconsistent in the terminal and GUI world
1125 * copy and pasting. When receiving some selection data,
1126 * replace all '\n' with '\r'.
1127 * FIXME: Fix the computer world.
1128 */
1129 repl = data;
1130 last = data + nitems * format / 8;
1131 while ((repl = memchr(repl, '\n', last - repl))) {
1132 *repl++ = '\r';
1133 }
1134
1135 if (IS_SET(MODE_BRCKTPASTE))
1136 ttywrite("\033[200~", 6);
1137 ttysend((char *)data, nitems * format / 8);
1138 if (IS_SET(MODE_BRCKTPASTE))
1139 ttywrite("\033[201~", 6);
1140 XFree(data);
1141 /* number of 32-bit chunks returned */
1142 ofs += nitems * format / 32;
1143 } while (rem > 0);
1144
1145 /*
1146 * Deleting the property again tells the selection owner to send the
1147 * next data chunk in the property.
1148 */
1149 if (e->type == PropertyNotify)
1150 XDeleteProperty(xw.dpy, xw.win, (int)property);
1151 }
1152
1153 void
1154 selpaste(const Arg *dummy)
1155 {
1156 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1157 xw.win, CurrentTime);
1158 }
1159
1160 void
1161 clipcopy(const Arg *dummy)
1162 {
1163 Atom clipboard;
1164
1165 if (sel.clipboard != NULL)
1166 free(sel.clipboard);
1167
1168 if (sel.primary != NULL) {
1169 sel.clipboard = xstrdup(sel.primary);
1170 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1171 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1172 }
1173 }
1174
1175 void
1176 clippaste(const Arg *dummy)
1177 {
1178 Atom clipboard;
1179
1180 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1181 XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
1182 xw.win, CurrentTime);
1183 }
1184
1185 void
1186 selclear(XEvent *e)
1187 {
1188 if (sel.ob.x == -1)
1189 return;
1190 sel.mode = SEL_IDLE;
1191 sel.ob.x = -1;
1192 tsetdirt(sel.nb.y, sel.ne.y);
1193 }
1194
1195 void
1196 selrequest(XEvent *e)
1197 {
1198 XSelectionRequestEvent *xsre;
1199 XSelectionEvent xev;
1200 Atom xa_targets, string, clipboard;
1201 char *seltext;
1202
1203 xsre = (XSelectionRequestEvent *) e;
1204 xev.type = SelectionNotify;
1205 xev.requestor = xsre->requestor;
1206 xev.selection = xsre->selection;
1207 xev.target = xsre->target;
1208 xev.time = xsre->time;
1209 if (xsre->property == None)
1210 xsre->property = xsre->target;
1211
1212 /* reject */
1213 xev.property = None;
1214
1215 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1216 if (xsre->target == xa_targets) {
1217 /* respond with the supported type */
1218 string = sel.xtarget;
1219 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1220 XA_ATOM, 32, PropModeReplace,
1221 (uchar *) &string, 1);
1222 xev.property = xsre->property;
1223 } else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
1224 /*
1225 * xith XA_STRING non ascii characters may be incorrect in the
1226 * requestor. It is not our problem, use utf8.
1227 */
1228 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1229 if (xsre->selection == XA_PRIMARY) {
1230 seltext = sel.primary;
1231 } else if (xsre->selection == clipboard) {
1232 seltext = sel.clipboard;
1233 } else {
1234 fprintf(stderr,
1235 "Unhandled clipboard selection 0x%lx\n",
1236 xsre->selection);
1237 return;
1238 }
1239 if (seltext != NULL) {
1240 XChangeProperty(xsre->display, xsre->requestor,
1241 xsre->property, xsre->target,
1242 8, PropModeReplace,
1243 (uchar *)seltext, strlen(seltext));
1244 xev.property = xsre->property;
1245 }
1246 }
1247
1248 /* all done, send a notification to the listener */
1249 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
1250 fprintf(stderr, "Error sending SelectionNotify event\n");
1251 }
1252
1253 void
1254 xsetsel(char *str, Time t)
1255 {
1256 free(sel.primary);
1257 sel.primary = str;
1258
1259 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
1260 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
1261 selclear(0);
1262 }
1263
1264 void
1265 brelease(XEvent *e)
1266 {
1267 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1268 mousereport(e);
1269 return;
1270 }
1271
1272 if (e->xbutton.button == Button2) {
1273 selpaste(NULL);
1274 } else if (e->xbutton.button == Button1) {
1275 if (sel.mode == SEL_READY) {
1276 getbuttoninfo(e);
1277 selcopy(e->xbutton.time);
1278 } else
1279 selclear(NULL);
1280 sel.mode = SEL_IDLE;
1281 tsetdirt(sel.nb.y, sel.ne.y);
1282 }
1283 }
1284
1285 void
1286 bmotion(XEvent *e)
1287 {
1288 int oldey, oldex, oldsby, oldsey;
1289
1290 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
1291 mousereport(e);
1292 return;
1293 }
1294
1295 if (!sel.mode)
1296 return;
1297
1298 sel.mode = SEL_READY;
1299 oldey = sel.oe.y;
1300 oldex = sel.oe.x;
1301 oldsby = sel.nb.y;
1302 oldsey = sel.ne.y;
1303 getbuttoninfo(e);
1304
1305 if (oldey != sel.oe.y || oldex != sel.oe.x)
1306 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1307 }
1308
1309 void
1310 die(const char *errstr, ...)
1311 {
1312 va_list ap;
1313
1314 va_start(ap, errstr);
1315 vfprintf(stderr, errstr, ap);
1316 va_end(ap);
1317 exit(1);
1318 }
1319
1320 void
1321 execsh(void)
1322 {
1323 char **args, *sh, *prog;
1324 const struct passwd *pw;
1325 char buf[sizeof(long) * 8 + 1];
1326
1327 errno = 0;
1328 if ((pw = getpwuid(getuid())) == NULL) {
1329 if (errno)
1330 die("getpwuid:%s\n", strerror(errno));
1331 else
1332 die("who are you?\n");
1333 }
1334
1335 if ((sh = getenv("SHELL")) == NULL)
1336 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
1337
1338 if (opt_cmd)
1339 prog = opt_cmd[0];
1340 else if (utmp)
1341 prog = utmp;
1342 else
1343 prog = sh;
1344 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
1345
1346 snprintf(buf, sizeof(buf), "%lu", xw.win);
1347
1348 unsetenv("COLUMNS");
1349 unsetenv("LINES");
1350 unsetenv("TERMCAP");
1351 setenv("LOGNAME", pw->pw_name, 1);
1352 setenv("USER", pw->pw_name, 1);
1353 setenv("SHELL", sh, 1);
1354 setenv("HOME", pw->pw_dir, 1);
1355 setenv("TERM", termname, 1);
1356 setenv("WINDOWID", buf, 1);
1357
1358 signal(SIGCHLD, SIG_DFL);
1359 signal(SIGHUP, SIG_DFL);
1360 signal(SIGINT, SIG_DFL);
1361 signal(SIGQUIT, SIG_DFL);
1362 signal(SIGTERM, SIG_DFL);
1363 signal(SIGALRM, SIG_DFL);
1364
1365 execvp(prog, args);
1366 _exit(1);
1367 }
1368
1369 void
1370 sigchld(int a)
1371 {
1372 int stat;
1373 pid_t p;
1374
1375 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
1376 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
1377
1378 if (pid != p)
1379 return;
1380
1381 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
1382 die("child finished with error '%d'\n", stat);
1383 exit(0);
1384 }
1385
1386
1387 void
1388 stty(void)
1389 {
1390 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
1391 size_t n, siz;
1392
1393 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
1394 die("incorrect stty parameters\n");
1395 memcpy(cmd, stty_args, n);
1396 q = cmd + n;
1397 siz = sizeof(cmd) - n;
1398 for (p = opt_cmd; p && (s = *p); ++p) {
1399 if ((n = strlen(s)) > siz-1)
1400 die("stty parameter length too long\n");
1401 *q++ = ' ';
1402 q = memcpy(q, s, n);
1403 q += n;
1404 siz-= n + 1;
1405 }
1406 *q = '\0';
1407 if (system(cmd) != 0)
1408 perror("Couldn't call stty");
1409 }
1410
1411 void
1412 ttynew(void)
1413 {
1414 int m, s;
1415 struct winsize w = {term.row, term.col, 0, 0};
1416
1417 if (opt_io) {
1418 term.mode |= MODE_PRINT;
1419 iofd = (!strcmp(opt_io, "-")) ?
1420 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
1421 if (iofd < 0) {
1422 fprintf(stderr, "Error opening %s:%s\n",
1423 opt_io, strerror(errno));
1424 }
1425 }
1426
1427 if (opt_line) {
1428 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
1429 die("open line failed: %s\n", strerror(errno));
1430 close(0);
1431 dup(cmdfd);
1432 stty();
1433 return;
1434 }
1435
1436 /* seems to work fine on linux, openbsd and freebsd */
1437 if (openpty(&m, &s, NULL, NULL, &w) < 0)
1438 die("openpty failed: %s\n", strerror(errno));
1439
1440 switch (pid = fork()) {
1441 case -1:
1442 die("fork failed\n");
1443 break;
1444 case 0:
1445 close(iofd);
1446 setsid(); /* create a new process group */
1447 dup2(s, 0);
1448 dup2(s, 1);
1449 dup2(s, 2);
1450 if (ioctl(s, TIOCSCTTY, NULL) < 0)
1451 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
1452 close(s);
1453 close(m);
1454 execsh();
1455 break;
1456 default:
1457 close(s);
1458 cmdfd = m;
1459 signal(SIGCHLD, sigchld);
1460 break;
1461 }
1462 }
1463
1464 void
1465 ttyread(void)
1466 {
1467 static char buf[BUFSIZ];
1468 static int buflen = 0;
1469 char *ptr;
1470 int charsize; /* size of utf8 char in bytes */
1471 Rune unicodep;
1472 int ret;
1473
1474 /* append read bytes to unprocessed bytes */
1475 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1476 die("Couldn't read from shell: %s\n", strerror(errno));
1477
1478 /* process every complete utf8 char */
1479 buflen += ret;
1480 ptr = buf;
1481 while ((charsize = utf8decode(ptr, &unicodep, buflen))) {
1482 tputc(unicodep);
1483 ptr += charsize;
1484 buflen -= charsize;
1485 }
1486
1487 /* keep any uncomplete utf8 char for the next call */
1488 memmove(buf, ptr, buflen);
1489 }
1490
1491 void
1492 ttywrite(const char *s, size_t n)
1493 {
1494 fd_set wfd;
1495 struct timespec tv;
1496 ssize_t r;
1497
1498 /*
1499 * Remember that we are using a pty, which might be a modem line.
1500 * Writing too much will clog the line. That's why we are doing this
1501 * dance.
1502 * FIXME: Migrate the world to Plan 9.
1503 */
1504 while (n > 0) {
1505 FD_ZERO(&wfd);
1506 FD_SET(cmdfd, &wfd);
1507 tv.tv_sec = 0;
1508 tv.tv_nsec = 0;
1509
1510 /* Check if we can write. */
1511 if (pselect(cmdfd+1, NULL, &wfd, NULL, &tv, NULL) < 0) {
1512 if (errno == EINTR)
1513 continue;
1514 die("select failed: %s\n", strerror(errno));
1515 }
1516 if(!FD_ISSET(cmdfd, &wfd)) {
1517 /* No, then free some buffer space. */
1518 ttyread();
1519 } else {
1520 /*
1521 * Only write 256 bytes at maximum. This seems to be a
1522 * reasonable value for a serial line. Bigger values
1523 * might clog the I/O.
1524 */
1525 r = write(cmdfd, s, (n < 256)? n : 256);
1526 if (r < 0) {
1527 die("write error on tty: %s\n",
1528 strerror(errno));
1529 }
1530 if (r < n) {
1531 /*
1532 * We weren't able to write out everything.
1533 * This means the buffer is getting full
1534 * again. Empty it.
1535 */
1536 if (n < 256)
1537 ttyread();
1538 n -= r;
1539 s += r;
1540 } else {
1541 /* All bytes have been written. */
1542 break;
1543 }
1544 }
1545 }
1546 }
1547
1548 void
1549 ttysend(char *s, size_t n)
1550 {
1551 int len;
1552 Rune u;
1553
1554 ttywrite(s, n);
1555 if (IS_SET(MODE_ECHO))
1556 while ((len = utf8decode(s, &u, n)) > 0) {
1557 techo(u);
1558 n -= len;
1559 s += len;
1560 }
1561 }
1562
1563 void
1564 ttyresize(void)
1565 {
1566 struct winsize w;
1567
1568 w.ws_row = term.row;
1569 w.ws_col = term.col;
1570 w.ws_xpixel = xw.tw;
1571 w.ws_ypixel = xw.th;
1572 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1573 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
1574 }
1575
1576 int
1577 tattrset(int attr)
1578 {
1579 int i, j;
1580
1581 for (i = 0; i < term.row-1; i++) {
1582 for (j = 0; j < term.col-1; j++) {
1583 if (term.line[i][j].mode & attr)
1584 return 1;
1585 }
1586 }
1587
1588 return 0;
1589 }
1590
1591 void
1592 tsetdirt(int top, int bot)
1593 {
1594 int i;
1595
1596 LIMIT(top, 0, term.row-1);
1597 LIMIT(bot, 0, term.row-1);
1598
1599 for (i = top; i <= bot; i++)
1600 term.dirty[i] = 1;
1601 }
1602
1603 void
1604 tsetdirtattr(int attr)
1605 {
1606 int i, j;
1607
1608 for (i = 0; i < term.row-1; i++) {
1609 for (j = 0; j < term.col-1; j++) {
1610 if (term.line[i][j].mode & attr) {
1611 tsetdirt(i, i);
1612 break;
1613 }
1614 }
1615 }
1616 }
1617
1618 void
1619 tfulldirt(void)
1620 {
1621 tsetdirt(0, term.row-1);
1622 }
1623
1624 void
1625 tcursor(int mode)
1626 {
1627 static TCursor c[2];
1628 int alt = IS_SET(MODE_ALTSCREEN);
1629
1630 if (mode == CURSOR_SAVE) {
1631 c[alt] = term.c;
1632 } else if (mode == CURSOR_LOAD) {
1633 term.c = c[alt];
1634 tmoveto(c[alt].x, c[alt].y);
1635 }
1636 }
1637
1638 void
1639 treset(void)
1640 {
1641 uint i;
1642
1643 term.c = (TCursor){{
1644 .mode = ATTR_NULL,
1645 .fg = defaultfg,
1646 .bg = defaultbg
1647 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1648
1649 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1650 for (i = tabspaces; i < term.col; i += tabspaces)
1651 term.tabs[i] = 1;
1652 term.top = 0;
1653 term.bot = term.row - 1;
1654 term.mode = MODE_WRAP;
1655 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
1656 term.charset = 0;
1657
1658 for (i = 0; i < 2; i++) {
1659 tmoveto(0, 0);
1660 tcursor(CURSOR_SAVE);
1661 tclearregion(0, 0, term.col-1, term.row-1);
1662 tswapscreen();
1663 }
1664 }
1665
1666 void
1667 tnew(int col, int row)
1668 {
1669 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1670 tresize(col, row);
1671 term.numlock = 1;
1672
1673 treset();
1674 }
1675
1676 void
1677 tswapscreen(void)
1678 {
1679 Line *tmp = term.line;
1680
1681 term.line = term.alt;
1682 term.alt = tmp;
1683 term.mode ^= MODE_ALTSCREEN;
1684 tfulldirt();
1685 }
1686
1687 void
1688 tscrolldown(int orig, int n)
1689 {
1690 int i;
1691 Line temp;
1692
1693 LIMIT(n, 0, term.bot-orig+1);
1694
1695 tsetdirt(orig, term.bot-n);
1696 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1697
1698 for (i = term.bot; i >= orig+n; i--) {
1699 temp = term.line[i];
1700 term.line[i] = term.line[i-n];
1701 term.line[i-n] = temp;
1702 }
1703
1704 selscroll(orig, n);
1705 }
1706
1707 void
1708 tscrollup(int orig, int n)
1709 {
1710 int i;
1711 Line temp;
1712
1713 LIMIT(n, 0, term.bot-orig+1);
1714
1715 tclearregion(0, orig, term.col-1, orig+n-1);
1716 tsetdirt(orig+n, term.bot);
1717
1718 for (i = orig; i <= term.bot-n; i++) {
1719 temp = term.line[i];
1720 term.line[i] = term.line[i+n];
1721 term.line[i+n] = temp;
1722 }
1723
1724 selscroll(orig, -n);
1725 }
1726
1727 void
1728 selscroll(int orig, int n)
1729 {
1730 if (sel.ob.x == -1)
1731 return;
1732
1733 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1734 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1735 selclear(NULL);
1736 return;
1737 }
1738 if (sel.type == SEL_RECTANGULAR) {
1739 if (sel.ob.y < term.top)
1740 sel.ob.y = term.top;
1741 if (sel.oe.y > term.bot)
1742 sel.oe.y = term.bot;
1743 } else {
1744 if (sel.ob.y < term.top) {
1745 sel.ob.y = term.top;
1746 sel.ob.x = 0;
1747 }
1748 if (sel.oe.y > term.bot) {
1749 sel.oe.y = term.bot;
1750 sel.oe.x = term.col;
1751 }
1752 }
1753 selnormalize();
1754 }
1755 }
1756
1757 void
1758 tnewline(int first_col)
1759 {
1760 int y = term.c.y;
1761
1762 if (y == term.bot) {
1763 tscrollup(term.top, 1);
1764 } else {
1765 y++;
1766 }
1767 tmoveto(first_col ? 0 : term.c.x, y);
1768 }
1769
1770 void
1771 csiparse(void)
1772 {
1773 char *p = csiescseq.buf, *np;
1774 long int v;
1775
1776 csiescseq.narg = 0;
1777 if (*p == '?') {
1778 csiescseq.priv = 1;
1779 p++;
1780 }
1781
1782 csiescseq.buf[csiescseq.len] = '\0';
1783 while (p < csiescseq.buf+csiescseq.len) {
1784 np = NULL;
1785 v = strtol(p, &np, 10);
1786 if (np == p)
1787 v = 0;
1788 if (v == LONG_MAX || v == LONG_MIN)
1789 v = -1;
1790 csiescseq.arg[csiescseq.narg++] = v;
1791 p = np;
1792 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1793 break;
1794 p++;
1795 }
1796 csiescseq.mode[0] = *p++;
1797 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1798 }
1799
1800 /* for absolute user moves, when decom is set */
1801 void
1802 tmoveato(int x, int y)
1803 {
1804 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1805 }
1806
1807 void
1808 tmoveto(int x, int y)
1809 {
1810 int miny, maxy;
1811
1812 if (term.c.state & CURSOR_ORIGIN) {
1813 miny = term.top;
1814 maxy = term.bot;
1815 } else {
1816 miny = 0;
1817 maxy = term.row - 1;
1818 }
1819 term.c.state &= ~CURSOR_WRAPNEXT;
1820 term.c.x = LIMIT(x, 0, term.col-1);
1821 term.c.y = LIMIT(y, miny, maxy);
1822 }
1823
1824 void
1825 tsetchar(Rune u, Glyph *attr, int x, int y)
1826 {
1827 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1828 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1829 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1830 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1831 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1832 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1833 "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1834 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1835 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1836 };
1837
1838 /*
1839 * The table is proudly stolen from rxvt.
1840 */
1841 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1842 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1843 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1844
1845 if (term.line[y][x].mode & ATTR_WIDE) {
1846 if (x+1 < term.col) {
1847 term.line[y][x+1].u = ' ';
1848 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1849 }
1850 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1851 term.line[y][x-1].u = ' ';
1852 term.line[y][x-1].mode &= ~ATTR_WIDE;
1853 }
1854
1855 term.dirty[y] = 1;
1856 term.line[y][x] = *attr;
1857 term.line[y][x].u = u;
1858 }
1859
1860 void
1861 tclearregion(int x1, int y1, int x2, int y2)
1862 {
1863 int x, y, temp;
1864 Glyph *gp;
1865
1866 if (x1 > x2)
1867 temp = x1, x1 = x2, x2 = temp;
1868 if (y1 > y2)
1869 temp = y1, y1 = y2, y2 = temp;
1870
1871 LIMIT(x1, 0, term.col-1);
1872 LIMIT(x2, 0, term.col-1);
1873 LIMIT(y1, 0, term.row-1);
1874 LIMIT(y2, 0, term.row-1);
1875
1876 for (y = y1; y <= y2; y++) {
1877 term.dirty[y] = 1;
1878 for (x = x1; x <= x2; x++) {
1879 gp = &term.line[y][x];
1880 if (selected(x, y))
1881 selclear(NULL);
1882 gp->fg = term.c.attr.fg;
1883 gp->bg = term.c.attr.bg;
1884 gp->mode = 0;
1885 gp->u = ' ';
1886 }
1887 }
1888 }
1889
1890 void
1891 tdeletechar(int n)
1892 {
1893 int dst, src, size;
1894 Glyph *line;
1895
1896 LIMIT(n, 0, term.col - term.c.x);
1897
1898 dst = term.c.x;
1899 src = term.c.x + n;
1900 size = term.col - src;
1901 line = term.line[term.c.y];
1902
1903 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1904 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1905 }
1906
1907 void
1908 tinsertblank(int n)
1909 {
1910 int dst, src, size;
1911 Glyph *line;
1912
1913 LIMIT(n, 0, term.col - term.c.x);
1914
1915 dst = term.c.x + n;
1916 src = term.c.x;
1917 size = term.col - dst;
1918 line = term.line[term.c.y];
1919
1920 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1921 tclearregion(src, term.c.y, dst - 1, term.c.y);
1922 }
1923
1924 void
1925 tinsertblankline(int n)
1926 {
1927 if (BETWEEN(term.c.y, term.top, term.bot))
1928 tscrolldown(term.c.y, n);
1929 }
1930
1931 void
1932 tdeleteline(int n)
1933 {
1934 if (BETWEEN(term.c.y, term.top, term.bot))
1935 tscrollup(term.c.y, n);
1936 }
1937
1938 int32_t
1939 tdefcolor(int *attr, int *npar, int l)
1940 {
1941 int32_t idx = -1;
1942 uint r, g, b;
1943
1944 switch (attr[*npar + 1]) {
1945 case 2: /* direct color in RGB space */
1946 if (*npar + 4 >= l) {
1947 fprintf(stderr,
1948 "erresc(38): Incorrect number of parameters (%d)\n",
1949 *npar);
1950 break;
1951 }
1952 r = attr[*npar + 2];
1953 g = attr[*npar + 3];
1954 b = attr[*npar + 4];
1955 *npar += 4;
1956 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1957 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1958 r, g, b);
1959 else
1960 idx = TRUECOLOR(r, g, b);
1961 break;
1962 case 5: /* indexed color */
1963 if (*npar + 2 >= l) {
1964 fprintf(stderr,
1965 "erresc(38): Incorrect number of parameters (%d)\n",
1966 *npar);
1967 break;
1968 }
1969 *npar += 2;
1970 if (!BETWEEN(attr[*npar], 0, 255))
1971 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1972 else
1973 idx = attr[*npar];
1974 break;
1975 case 0: /* implemented defined (only foreground) */
1976 case 1: /* transparent */
1977 case 3: /* direct color in CMY space */
1978 case 4: /* direct color in CMYK space */
1979 default:
1980 fprintf(stderr,
1981 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1982 break;
1983 }
1984
1985 return idx;
1986 }
1987
1988 void
1989 tsetattr(int *attr, int l)
1990 {
1991 int i;
1992 int32_t idx;
1993
1994 for (i = 0; i < l; i++) {
1995 switch (attr[i]) {
1996 case 0:
1997 term.c.attr.mode &= ~(
1998 ATTR_BOLD |
1999 ATTR_FAINT |
2000 ATTR_ITALIC |
2001 ATTR_UNDERLINE |
2002 ATTR_BLINK |
2003 ATTR_REVERSE |
2004 ATTR_INVISIBLE |
2005 ATTR_STRUCK );
2006 term.c.attr.fg = defaultfg;
2007 term.c.attr.bg = defaultbg;
2008 break;
2009 case 1:
2010 term.c.attr.mode |= ATTR_BOLD;
2011 break;
2012 case 2:
2013 term.c.attr.mode |= ATTR_FAINT;
2014 break;
2015 case 3:
2016 term.c.attr.mode |= ATTR_ITALIC;
2017 break;
2018 case 4:
2019 term.c.attr.mode |= ATTR_UNDERLINE;
2020 break;
2021 case 5: /* slow blink */
2022 /* FALLTHROUGH */
2023 case 6: /* rapid blink */
2024 term.c.attr.mode |= ATTR_BLINK;
2025 break;
2026 case 7:
2027 term.c.attr.mode |= ATTR_REVERSE;
2028 break;
2029 case 8:
2030 term.c.attr.mode |= ATTR_INVISIBLE;
2031 break;
2032 case 9:
2033 term.c.attr.mode |= ATTR_STRUCK;
2034 break;
2035 case 22:
2036 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
2037 break;
2038 case 23:
2039 term.c.attr.mode &= ~ATTR_ITALIC;
2040 break;
2041 case 24:
2042 term.c.attr.mode &= ~ATTR_UNDERLINE;
2043 break;
2044 case 25:
2045 term.c.attr.mode &= ~ATTR_BLINK;
2046 break;
2047 case 27:
2048 term.c.attr.mode &= ~ATTR_REVERSE;
2049 break;
2050 case 28:
2051 term.c.attr.mode &= ~ATTR_INVISIBLE;
2052 break;
2053 case 29:
2054 term.c.attr.mode &= ~ATTR_STRUCK;
2055 break;
2056 case 38:
2057 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2058 term.c.attr.fg = idx;
2059 break;
2060 case 39:
2061 term.c.attr.fg = defaultfg;
2062 break;
2063 case 48:
2064 if ((idx = tdefcolor(attr, &i, l)) >= 0)
2065 term.c.attr.bg = idx;
2066 break;
2067 case 49:
2068 term.c.attr.bg = defaultbg;
2069 break;
2070 default:
2071 if (BETWEEN(attr[i], 30, 37)) {
2072 term.c.attr.fg = attr[i] - 30;
2073 } else if (BETWEEN(attr[i], 40, 47)) {
2074 term.c.attr.bg = attr[i] - 40;
2075 } else if (BETWEEN(attr[i], 90, 97)) {
2076 term.c.attr.fg = attr[i] - 90 + 8;
2077 } else if (BETWEEN(attr[i], 100, 107)) {
2078 term.c.attr.bg = attr[i] - 100 + 8;
2079 } else {
2080 fprintf(stderr,
2081 "erresc(default): gfx attr %d unknown\n",
2082 attr[i]), csidump();
2083 }
2084 break;
2085 }
2086 }
2087 }
2088
2089 void
2090 tsetscroll(int t, int b)
2091 {
2092 int temp;
2093
2094 LIMIT(t, 0, term.row-1);
2095 LIMIT(b, 0, term.row-1);
2096 if (t > b) {
2097 temp = t;
2098 t = b;
2099 b = temp;
2100 }
2101 term.top = t;
2102 term.bot = b;
2103 }
2104
2105 void
2106 tsetmode(int priv, int set, int *args, int narg)
2107 {
2108 int *lim, mode;
2109 int alt;
2110
2111 for (lim = args + narg; args < lim; ++args) {
2112 if (priv) {
2113 switch (*args) {
2114 case 1: /* DECCKM -- Cursor key */
2115 MODBIT(term.mode, set, MODE_APPCURSOR);
2116 break;
2117 case 5: /* DECSCNM -- Reverse video */
2118 mode = term.mode;
2119 MODBIT(term.mode, set, MODE_REVERSE);
2120 if (mode != term.mode)
2121 redraw();
2122 break;
2123 case 6: /* DECOM -- Origin */
2124 MODBIT(term.c.state, set, CURSOR_ORIGIN);
2125 tmoveato(0, 0);
2126 break;
2127 case 7: /* DECAWM -- Auto wrap */
2128 MODBIT(term.mode, set, MODE_WRAP);
2129 break;
2130 case 0: /* Error (IGNORED) */
2131 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
2132 case 3: /* DECCOLM -- Column (IGNORED) */
2133 case 4: /* DECSCLM -- Scroll (IGNORED) */
2134 case 8: /* DECARM -- Auto repeat (IGNORED) */
2135 case 18: /* DECPFF -- Printer feed (IGNORED) */
2136 case 19: /* DECPEX -- Printer extent (IGNORED) */
2137 case 42: /* DECNRCM -- National characters (IGNORED) */
2138 case 12: /* att610 -- Start blinking cursor (IGNORED) */
2139 break;
2140 case 25: /* DECTCEM -- Text Cursor Enable Mode */
2141 MODBIT(term.mode, !set, MODE_HIDE);
2142 break;
2143 case 9: /* X10 mouse compatibility mode */
2144 xsetpointermotion(0);
2145 MODBIT(term.mode, 0, MODE_MOUSE);
2146 MODBIT(term.mode, set, MODE_MOUSEX10);
2147 break;
2148 case 1000: /* 1000: report button press */
2149 xsetpointermotion(0);
2150 MODBIT(term.mode, 0, MODE_MOUSE);
2151 MODBIT(term.mode, set, MODE_MOUSEBTN);
2152 break;
2153 case 1002: /* 1002: report motion on button press */
2154 xsetpointermotion(0);
2155 MODBIT(term.mode, 0, MODE_MOUSE);
2156 MODBIT(term.mode, set, MODE_MOUSEMOTION);
2157 break;
2158 case 1003: /* 1003: enable all mouse motions */
2159 xsetpointermotion(set);
2160 MODBIT(term.mode, 0, MODE_MOUSE);
2161 MODBIT(term.mode, set, MODE_MOUSEMANY);
2162 break;
2163 case 1004: /* 1004: send focus events to tty */
2164 MODBIT(term.mode, set, MODE_FOCUS);
2165 break;
2166 case 1006: /* 1006: extended reporting mode */
2167 MODBIT(term.mode, set, MODE_MOUSESGR);
2168 break;
2169 case 1034:
2170 MODBIT(term.mode, set, MODE_8BIT);
2171 break;
2172 case 1049: /* swap screen & set/restore cursor as xterm */
2173 if (!allowaltscreen)
2174 break;
2175 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2176 /* FALLTHROUGH */
2177 case 47: /* swap screen */
2178 case 1047:
2179 if (!allowaltscreen)
2180 break;
2181 alt = IS_SET(MODE_ALTSCREEN);
2182 if (alt) {
2183 tclearregion(0, 0, term.col-1,
2184 term.row-1);
2185 }
2186 if (set ^ alt) /* set is always 1 or 0 */
2187 tswapscreen();
2188 if (*args != 1049)
2189 break;
2190 /* FALLTHROUGH */
2191 case 1048:
2192 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
2193 break;
2194 case 2004: /* 2004: bracketed paste mode */
2195 MODBIT(term.mode, set, MODE_BRCKTPASTE);
2196 break;
2197 /* Not implemented mouse modes. See comments there. */
2198 case 1001: /* mouse highlight mode; can hang the
2199 terminal by design when implemented. */
2200 case 1005: /* UTF-8 mouse mode; will confuse
2201 applications not supporting UTF-8
2202 and luit. */
2203 case 1015: /* urxvt mangled mouse mode; incompatible
2204 and can be mistaken for other control
2205 codes. */
2206 default:
2207 fprintf(stderr,
2208 "erresc: unknown private set/reset mode %d\n",
2209 *args);
2210 break;
2211 }
2212 } else {
2213 switch (*args) {
2214 case 0: /* Error (IGNORED) */
2215 break;
2216 case 2: /* KAM -- keyboard action */
2217 MODBIT(term.mode, set, MODE_KBDLOCK);
2218 break;
2219 case 4: /* IRM -- Insertion-replacement */
2220 MODBIT(term.mode, set, MODE_INSERT);
2221 break;
2222 case 12: /* SRM -- Send/Receive */
2223 MODBIT(term.mode, !set, MODE_ECHO);
2224 break;
2225 case 20: /* LNM -- Linefeed/new line */
2226 MODBIT(term.mode, set, MODE_CRLF);
2227 break;
2228 default:
2229 fprintf(stderr,
2230 "erresc: unknown set/reset mode %d\n",
2231 *args);
2232 break;
2233 }
2234 }
2235 }
2236 }
2237
2238 void
2239 csihandle(void)
2240 {
2241 char buf[40];
2242 int len;
2243
2244 switch (csiescseq.mode[0]) {
2245 default:
2246 unknown:
2247 fprintf(stderr, "erresc: unknown csi ");
2248 csidump();
2249 /* die(""); */
2250 break;
2251 case '@': /* ICH -- Insert <n> blank char */
2252 DEFAULT(csiescseq.arg[0], 1);
2253 tinsertblank(csiescseq.arg[0]);
2254 break;
2255 case 'A': /* CUU -- Cursor <n> Up */
2256 DEFAULT(csiescseq.arg[0], 1);
2257 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
2258 break;
2259 case 'B': /* CUD -- Cursor <n> Down */
2260 case 'e': /* VPR --Cursor <n> Down */
2261 DEFAULT(csiescseq.arg[0], 1);
2262 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
2263 break;
2264 case 'i': /* MC -- Media Copy */
2265 switch (csiescseq.arg[0]) {
2266 case 0:
2267 tdump();
2268 break;
2269 case 1:
2270 tdumpline(term.c.y);
2271 break;
2272 case 2:
2273 tdumpsel();
2274 break;
2275 case 4:
2276 term.mode &= ~MODE_PRINT;
2277 break;
2278 case 5:
2279 term.mode |= MODE_PRINT;
2280 break;
2281 }
2282 break;
2283 case 'c': /* DA -- Device Attributes */
2284 if (csiescseq.arg[0] == 0)
2285 ttywrite(vtiden, sizeof(vtiden) - 1);
2286 break;
2287 case 'C': /* CUF -- Cursor <n> Forward */
2288 case 'a': /* HPR -- Cursor <n> Forward */
2289 DEFAULT(csiescseq.arg[0], 1);
2290 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
2291 break;
2292 case 'D': /* CUB -- Cursor <n> Backward */
2293 DEFAULT(csiescseq.arg[0], 1);
2294 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
2295 break;
2296 case 'E': /* CNL -- Cursor <n> Down and first col */
2297 DEFAULT(csiescseq.arg[0], 1);
2298 tmoveto(0, term.c.y+csiescseq.arg[0]);
2299 break;
2300 case 'F': /* CPL -- Cursor <n> Up and first col */
2301 DEFAULT(csiescseq.arg[0], 1);
2302 tmoveto(0, term.c.y-csiescseq.arg[0]);
2303 break;
2304 case 'g': /* TBC -- Tabulation clear */
2305 switch (csiescseq.arg[0]) {
2306 case 0: /* clear current tab stop */
2307 term.tabs[term.c.x] = 0;
2308 break;
2309 case 3: /* clear all the tabs */
2310 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
2311 break;
2312 default:
2313 goto unknown;
2314 }
2315 break;
2316 case 'G': /* CHA -- Move to <col> */
2317 case '`': /* HPA */
2318 DEFAULT(csiescseq.arg[0], 1);
2319 tmoveto(csiescseq.arg[0]-1, term.c.y);
2320 break;
2321 case 'H': /* CUP -- Move to <row> <col> */
2322 case 'f': /* HVP */
2323 DEFAULT(csiescseq.arg[0], 1);
2324 DEFAULT(csiescseq.arg[1], 1);
2325 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
2326 break;
2327 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
2328 DEFAULT(csiescseq.arg[0], 1);
2329 tputtab(csiescseq.arg[0]);
2330 break;
2331 case 'J': /* ED -- Clear screen */
2332 selclear(NULL);
2333 switch (csiescseq.arg[0]) {
2334 case 0: /* below */
2335 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
2336 if (term.c.y < term.row-1) {
2337 tclearregion(0, term.c.y+1, term.col-1,
2338 term.row-1);
2339 }
2340 break;
2341 case 1: /* above */
2342 if (term.c.y > 1)
2343 tclearregion(0, 0, term.col-1, term.c.y-1);
2344 tclearregion(0, term.c.y, term.c.x, term.c.y);
2345 break;
2346 case 2: /* all */
2347 tclearregion(0, 0, term.col-1, term.row-1);
2348 break;
2349 default:
2350 goto unknown;
2351 }
2352 break;
2353 case 'K': /* EL -- Clear line */
2354 switch (csiescseq.arg[0]) {
2355 case 0: /* right */
2356 tclearregion(term.c.x, term.c.y, term.col-1,
2357 term.c.y);
2358 break;
2359 case 1: /* left */
2360 tclearregion(0, term.c.y, term.c.x, term.c.y);
2361 break;
2362 case 2: /* all */
2363 tclearregion(0, term.c.y, term.col-1, term.c.y);
2364 break;
2365 }
2366 break;
2367 case 'S': /* SU -- Scroll <n> line up */
2368 DEFAULT(csiescseq.arg[0], 1);
2369 tscrollup(term.top, csiescseq.arg[0]);
2370 break;
2371 case 'T': /* SD -- Scroll <n> line down */
2372 DEFAULT(csiescseq.arg[0], 1);
2373 tscrolldown(term.top, csiescseq.arg[0]);
2374 break;
2375 case 'L': /* IL -- Insert <n> blank lines */
2376 DEFAULT(csiescseq.arg[0], 1);
2377 tinsertblankline(csiescseq.arg[0]);
2378 break;
2379 case 'l': /* RM -- Reset Mode */
2380 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
2381 break;
2382 case 'M': /* DL -- Delete <n> lines */
2383 DEFAULT(csiescseq.arg[0], 1);
2384 tdeleteline(csiescseq.arg[0]);
2385 break;
2386 case 'X': /* ECH -- Erase <n> char */
2387 DEFAULT(csiescseq.arg[0], 1);
2388 tclearregion(term.c.x, term.c.y,
2389 term.c.x + csiescseq.arg[0] - 1, term.c.y);
2390 break;
2391 case 'P': /* DCH -- Delete <n> char */
2392 DEFAULT(csiescseq.arg[0], 1);
2393 tdeletechar(csiescseq.arg[0]);
2394 break;
2395 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
2396 DEFAULT(csiescseq.arg[0], 1);
2397 tputtab(-csiescseq.arg[0]);
2398 break;
2399 case 'd': /* VPA -- Move to <row> */
2400 DEFAULT(csiescseq.arg[0], 1);
2401 tmoveato(term.c.x, csiescseq.arg[0]-1);
2402 break;
2403 case 'h': /* SM -- Set terminal mode */
2404 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
2405 break;
2406 case 'm': /* SGR -- Terminal attribute (color) */
2407 tsetattr(csiescseq.arg, csiescseq.narg);
2408 break;
2409 case 'n': /* DSR – Device Status Report (cursor position) */
2410 if (csiescseq.arg[0] == 6) {
2411 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
2412 term.c.y+1, term.c.x+1);
2413 ttywrite(buf, len);
2414 }
2415 break;
2416 case 'r': /* DECSTBM -- Set Scrolling Region */
2417 if (csiescseq.priv) {
2418 goto unknown;
2419 } else {
2420 DEFAULT(csiescseq.arg[0], 1);
2421 DEFAULT(csiescseq.arg[1], term.row);
2422 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2423 tmoveato(0, 0);
2424 }
2425 break;
2426 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2427 tcursor(CURSOR_SAVE);
2428 break;
2429 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2430 tcursor(CURSOR_LOAD);
2431 break;
2432 case ' ':
2433 switch (csiescseq.mode[1]) {
2434 case 'q': /* DECSCUSR -- Set Cursor Style */
2435 DEFAULT(csiescseq.arg[0], 1);
2436 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
2437 goto unknown;
2438 }
2439 xw.cursor = csiescseq.arg[0];
2440 break;
2441 default:
2442 goto unknown;
2443 }
2444 break;
2445 }
2446 }
2447
2448 void
2449 csidump(void)
2450 {
2451 int i;
2452 uint c;
2453
2454 printf("ESC[");
2455 for (i = 0; i < csiescseq.len; i++) {
2456 c = csiescseq.buf[i] & 0xff;
2457 if (isprint(c)) {
2458 putchar(c);
2459 } else if (c == '\n') {
2460 printf("(\\n)");
2461 } else if (c == '\r') {
2462 printf("(\\r)");
2463 } else if (c == 0x1b) {
2464 printf("(\\e)");
2465 } else {
2466 printf("(%02x)", c);
2467 }
2468 }
2469 putchar('\n');
2470 }
2471
2472 void
2473 csireset(void)
2474 {
2475 memset(&csiescseq, 0, sizeof(csiescseq));
2476 }
2477
2478 void
2479 strhandle(void)
2480 {
2481 char *p = NULL;
2482 int j, narg, par;
2483
2484 term.esc &= ~(ESC_STR_END|ESC_STR);
2485 strparse();
2486 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
2487
2488 switch (strescseq.type) {
2489 case ']': /* OSC -- Operating System Command */
2490 switch (par) {
2491 case 0:
2492 case 1:
2493 case 2:
2494 if (narg > 1)
2495 xsettitle(strescseq.args[1]);
2496 return;
2497 case 4: /* color set */
2498 if (narg < 3)
2499 break;
2500 p = strescseq.args[2];
2501 /* FALLTHROUGH */
2502 case 104: /* color reset, here p = NULL */
2503 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2504 if (xsetcolorname(j, p)) {
2505 fprintf(stderr, "erresc: invalid color %s\n", p);
2506 } else {
2507 /*
2508 * TODO if defaultbg color is changed, borders
2509 * are dirty
2510 */
2511 redraw();
2512 }
2513 return;
2514 }
2515 break;
2516 case 'k': /* old title set compatibility */
2517 xsettitle(strescseq.args[0]);
2518 return;
2519 case 'P': /* DCS -- Device Control String */
2520 case '_': /* APC -- Application Program Command */
2521 case '^': /* PM -- Privacy Message */
2522 return;
2523 }
2524
2525 fprintf(stderr, "erresc: unknown str ");
2526 strdump();
2527 }
2528
2529 void
2530 strparse(void)
2531 {
2532 int c;
2533 char *p = strescseq.buf;
2534
2535 strescseq.narg = 0;
2536 strescseq.buf[strescseq.len] = '\0';
2537
2538 if (*p == '\0')
2539 return;
2540
2541 while (strescseq.narg < STR_ARG_SIZ) {
2542 strescseq.args[strescseq.narg++] = p;
2543 while ((c = *p) != ';' && c != '\0')
2544 ++p;
2545 if (c == '\0')
2546 return;
2547 *p++ = '\0';
2548 }
2549 }
2550
2551 void
2552 strdump(void)
2553 {
2554 int i;
2555 uint c;
2556
2557 printf("ESC%c", strescseq.type);
2558 for (i = 0; i < strescseq.len; i++) {
2559 c = strescseq.buf[i] & 0xff;
2560 if (c == '\0') {
2561 return;
2562 } else if (isprint(c)) {
2563 putchar(c);
2564 } else if (c == '\n') {
2565 printf("(\\n)");
2566 } else if (c == '\r') {
2567 printf("(\\r)");
2568 } else if (c == 0x1b) {
2569 printf("(\\e)");
2570 } else {
2571 printf("(%02x)", c);
2572 }
2573 }
2574 printf("ESC\\\n");
2575 }
2576
2577 void
2578 strreset(void)
2579 {
2580 memset(&strescseq, 0, sizeof(strescseq));
2581 }
2582
2583 void
2584 sendbreak(const Arg *arg)
2585 {
2586 if (tcsendbreak(cmdfd, 0))
2587 perror("Error sending break");
2588 }
2589
2590 void
2591 tprinter(char *s, size_t len)
2592 {
2593 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
2594 fprintf(stderr, "Error writing in %s:%s\n",
2595 opt_io, strerror(errno));
2596 close(iofd);
2597 iofd = -1;
2598 }
2599 }
2600
2601 void
2602 toggleprinter(const Arg *arg)
2603 {
2604 term.mode ^= MODE_PRINT;
2605 }
2606
2607 void
2608 printscreen(const Arg *arg)
2609 {
2610 tdump();
2611 }
2612
2613 void
2614 printsel(const Arg *arg)
2615 {
2616 tdumpsel();
2617 }
2618
2619 void
2620 tdumpsel(void)
2621 {
2622 char *ptr;
2623
2624 if ((ptr = getsel())) {
2625 tprinter(ptr, strlen(ptr));
2626 free(ptr);
2627 }
2628 }
2629
2630 void
2631 tdumpline(int n)
2632 {
2633 char buf[UTF_SIZ];
2634 Glyph *bp, *end;
2635
2636 bp = &term.line[n][0];
2637 end = &bp[MIN(tlinelen(n), term.col) - 1];
2638 if (bp != end || bp->u != ' ') {
2639 for ( ;bp <= end; ++bp)
2640 tprinter(buf, utf8encode(bp->u, buf));
2641 }
2642 tprinter("\n", 1);
2643 }
2644
2645 void
2646 tdump(void)
2647 {
2648 int i;
2649
2650 for (i = 0; i < term.row; ++i)
2651 tdumpline(i);
2652 }
2653
2654 void
2655 tputtab(int n)
2656 {
2657 uint x = term.c.x;
2658
2659 if (n > 0) {
2660 while (x < term.col && n--)
2661 for (++x; x < term.col && !term.tabs[x]; ++x)
2662 /* nothing */ ;
2663 } else if (n < 0) {
2664 while (x > 0 && n++)
2665 for (--x; x > 0 && !term.tabs[x]; --x)
2666 /* nothing */ ;
2667 }
2668 term.c.x = LIMIT(x, 0, term.col-1);
2669 }
2670
2671 void
2672 techo(Rune u)
2673 {
2674 if (ISCONTROL(u)) { /* control code */
2675 if (u & 0x80) {
2676 u &= 0x7f;
2677 tputc('^');
2678 tputc('[');
2679 } else if (u != '\n' && u != '\r' && u != '\t') {
2680 u ^= 0x40;
2681 tputc('^');
2682 }
2683 }
2684 tputc(u);
2685 }
2686
2687 void
2688 tdeftran(char ascii)
2689 {
2690 static char cs[] = "0B";
2691 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2692 char *p;
2693
2694 if ((p = strchr(cs, ascii)) == NULL) {
2695 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2696 } else {
2697 term.trantbl[term.icharset] = vcs[p - cs];
2698 }
2699 }
2700
2701 void
2702 tdectest(char c)
2703 {
2704 int x, y;
2705
2706 if (c == '8') { /* DEC screen alignment test. */
2707 for (x = 0; x < term.col; ++x) {
2708 for (y = 0; y < term.row; ++y)
2709 tsetchar('E', &term.c.attr, x, y);
2710 }
2711 }
2712 }
2713
2714 void
2715 tstrsequence(uchar c)
2716 {
2717 switch (c) {
2718 case 0x90: /* DCS -- Device Control String */
2719 c = 'P';
2720 break;
2721 case 0x9f: /* APC -- Application Program Command */
2722 c = '_';
2723 break;
2724 case 0x9e: /* PM -- Privacy Message */
2725 c = '^';
2726 break;
2727 case 0x9d: /* OSC -- Operating System Command */
2728 c = ']';
2729 break;
2730 }
2731 strreset();
2732 strescseq.type = c;
2733 term.esc |= ESC_STR;
2734 }
2735
2736 void
2737 tcontrolcode(uchar ascii)
2738 {
2739 switch (ascii) {
2740 case '\t': /* HT */
2741 tputtab(1);
2742 return;
2743 case '\b': /* BS */
2744 tmoveto(term.c.x-1, term.c.y);
2745 return;
2746 case '\r': /* CR */
2747 tmoveto(0, term.c.y);
2748 return;
2749 case '\f': /* LF */
2750 case '\v': /* VT */
2751 case '\n': /* LF */
2752 /* go to first col if the mode is set */
2753 tnewline(IS_SET(MODE_CRLF));
2754 return;
2755 case '\a': /* BEL */
2756 if (term.esc & ESC_STR_END) {
2757 /* backwards compatibility to xterm */
2758 strhandle();
2759 } else {
2760 if (!(xw.state & WIN_FOCUSED))
2761 xseturgency(1);
2762 if (bellvolume)
2763 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
2764 }
2765 break;
2766 case '\033': /* ESC */
2767 csireset();
2768 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2769 term.esc |= ESC_START;
2770 return;
2771 case '\016': /* SO (LS1 -- Locking shift 1) */
2772 case '\017': /* SI (LS0 -- Locking shift 0) */
2773 term.charset = 1 - (ascii - '\016');
2774 return;
2775 case '\032': /* SUB */
2776 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2777 case '\030': /* CAN */
2778 csireset();
2779 break;
2780 case '\005': /* ENQ (IGNORED) */
2781 case '\000': /* NUL (IGNORED) */
2782 case '\021': /* XON (IGNORED) */
2783 case '\023': /* XOFF (IGNORED) */
2784 case 0177: /* DEL (IGNORED) */
2785 return;
2786 case 0x80: /* TODO: PAD */
2787 case 0x81: /* TODO: HOP */
2788 case 0x82: /* TODO: BPH */
2789 case 0x83: /* TODO: NBH */
2790 case 0x84: /* TODO: IND */
2791 break;
2792 case 0x85: /* NEL -- Next line */
2793 tnewline(1); /* always go to first col */
2794 break;
2795 case 0x86: /* TODO: SSA */
2796 case 0x87: /* TODO: ESA */
2797 break;
2798 case 0x88: /* HTS -- Horizontal tab stop */
2799 term.tabs[term.c.x] = 1;
2800 break;
2801 case 0x89: /* TODO: HTJ */
2802 case 0x8a: /* TODO: VTS */
2803 case 0x8b: /* TODO: PLD */
2804 case 0x8c: /* TODO: PLU */
2805 case 0x8d: /* TODO: RI */
2806 case 0x8e: /* TODO: SS2 */
2807 case 0x8f: /* TODO: SS3 */
2808 case 0x91: /* TODO: PU1 */
2809 case 0x92: /* TODO: PU2 */
2810 case 0x93: /* TODO: STS */
2811 case 0x94: /* TODO: CCH */
2812 case 0x95: /* TODO: MW */
2813 case 0x96: /* TODO: SPA */
2814 case 0x97: /* TODO: EPA */
2815 case 0x98: /* TODO: SOS */
2816 case 0x99: /* TODO: SGCI */
2817 break;
2818 case 0x9a: /* DECID -- Identify Terminal */
2819 ttywrite(vtiden, sizeof(vtiden) - 1);
2820 break;
2821 case 0x9b: /* TODO: CSI */
2822 case 0x9c: /* TODO: ST */
2823 break;
2824 case 0x90: /* DCS -- Device Control String */
2825 case 0x9d: /* OSC -- Operating System Command */
2826 case 0x9e: /* PM -- Privacy Message */
2827 case 0x9f: /* APC -- Application Program Command */
2828 tstrsequence(ascii);
2829 return;
2830 }
2831 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2832 term.esc &= ~(ESC_STR_END|ESC_STR);
2833 }
2834
2835 /*
2836 * returns 1 when the sequence is finished and it hasn't to read
2837 * more characters for this sequence, otherwise 0
2838 */
2839 int
2840 eschandle(uchar ascii)
2841 {
2842 switch (ascii) {
2843 case '[':
2844 term.esc |= ESC_CSI;
2845 return 0;
2846 case '#':
2847 term.esc |= ESC_TEST;
2848 return 0;
2849 case 'P': /* DCS -- Device Control String */
2850 case '_': /* APC -- Application Program Command */
2851 case '^': /* PM -- Privacy Message */
2852 case ']': /* OSC -- Operating System Command */
2853 case 'k': /* old title set compatibility */
2854 tstrsequence(ascii);
2855 return 0;
2856 case 'n': /* LS2 -- Locking shift 2 */
2857 case 'o': /* LS3 -- Locking shift 3 */
2858 term.charset = 2 + (ascii - 'n');
2859 break;
2860 case '(': /* GZD4 -- set primary charset G0 */
2861 case ')': /* G1D4 -- set secondary charset G1 */
2862 case '*': /* G2D4 -- set tertiary charset G2 */
2863 case '+': /* G3D4 -- set quaternary charset G3 */
2864 term.icharset = ascii - '(';
2865 term.esc |= ESC_ALTCHARSET;
2866 return 0;
2867 case 'D': /* IND -- Linefeed */
2868 if (term.c.y == term.bot) {
2869 tscrollup(term.top, 1);
2870 } else {
2871 tmoveto(term.c.x, term.c.y+1);
2872 }
2873 break;
2874 case 'E': /* NEL -- Next line */
2875 tnewline(1); /* always go to first col */
2876 break;
2877 case 'H': /* HTS -- Horizontal tab stop */
2878 term.tabs[term.c.x] = 1;
2879 break;
2880 case 'M': /* RI -- Reverse index */
2881 if (term.c.y == term.top) {
2882 tscrolldown(term.top, 1);
2883 } else {
2884 tmoveto(term.c.x, term.c.y-1);
2885 }
2886 break;
2887 case 'Z': /* DECID -- Identify Terminal */
2888 ttywrite(vtiden, sizeof(vtiden) - 1);
2889 break;
2890 case 'c': /* RIS -- Reset to inital state */
2891 treset();
2892 xresettitle();
2893 xloadcols();
2894 break;
2895 case '=': /* DECPAM -- Application keypad */
2896 term.mode |= MODE_APPKEYPAD;
2897 break;
2898 case '>': /* DECPNM -- Normal keypad */
2899 term.mode &= ~MODE_APPKEYPAD;
2900 break;
2901 case '7': /* DECSC -- Save Cursor */
2902 tcursor(CURSOR_SAVE);
2903 break;
2904 case '8': /* DECRC -- Restore Cursor */
2905 tcursor(CURSOR_LOAD);
2906 break;
2907 case '\\': /* ST -- String Terminator */
2908 if (term.esc & ESC_STR_END)
2909 strhandle();
2910 break;
2911 default:
2912 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2913 (uchar) ascii, isprint(ascii)? ascii:'.');
2914 break;
2915 }
2916 return 1;
2917 }
2918
2919 void
2920 tputc(Rune u)
2921 {
2922 char c[UTF_SIZ];
2923 int control;
2924 int width, len;
2925 Glyph *gp;
2926
2927 control = ISCONTROL(u);
2928 len = utf8encode(u, c);
2929 if (!control && (width = wcwidth(u)) == -1) {
2930 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2931 width = 1;
2932 }
2933
2934 if (IS_SET(MODE_PRINT))
2935 tprinter(c, len);
2936
2937 /*
2938 * STR sequence must be checked before anything else
2939 * because it uses all following characters until it
2940 * receives a ESC, a SUB, a ST or any other C1 control
2941 * character.
2942 */
2943 if (term.esc & ESC_STR) {
2944 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2945 ISCONTROLC1(u)) {
2946 term.esc &= ~(ESC_START|ESC_STR);
2947 term.esc |= ESC_STR_END;
2948 } else if (strescseq.len + len < sizeof(strescseq.buf) - 1) {
2949 memmove(&strescseq.buf[strescseq.len], c, len);
2950 strescseq.len += len;
2951 return;
2952 } else {
2953 /*
2954 * Here is a bug in terminals. If the user never sends
2955 * some code to stop the str or esc command, then st
2956 * will stop responding. But this is better than
2957 * silently failing with unknown characters. At least
2958 * then users will report back.
2959 *
2960 * In the case users ever get fixed, here is the code:
2961 */
2962 /*
2963 * term.esc = 0;
2964 * strhandle();
2965 */
2966 return;
2967 }
2968 }
2969
2970 /*
2971 * Actions of control codes must be performed as soon they arrive
2972 * because they can be embedded inside a control sequence, and
2973 * they must not cause conflicts with sequences.
2974 */
2975 if (control) {
2976 tcontrolcode(u);
2977 /*
2978 * control codes are not shown ever
2979 */
2980 return;
2981 } else if (term.esc & ESC_START) {
2982 if (term.esc & ESC_CSI) {
2983 csiescseq.buf[csiescseq.len++] = u;
2984 if (BETWEEN(u, 0x40, 0x7E)
2985 || csiescseq.len >= \
2986 sizeof(csiescseq.buf)-1) {
2987 term.esc = 0;
2988 csiparse();
2989 csihandle();
2990 }
2991 return;
2992 } else if (term.esc & ESC_ALTCHARSET) {
2993 tdeftran(u);
2994 } else if (term.esc & ESC_TEST) {
2995 tdectest(u);
2996 } else {
2997 if (!eschandle(u))
2998 return;
2999 /* sequence already finished */
3000 }
3001 term.esc = 0;
3002 /*
3003 * All characters which form part of a sequence are not
3004 * printed
3005 */
3006 return;
3007 }
3008 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
3009 selclear(NULL);
3010
3011 gp = &term.line[term.c.y][term.c.x];
3012 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
3013 gp->mode |= ATTR_WRAP;
3014 tnewline(1);
3015 gp = &term.line[term.c.y][term.c.x];
3016 }
3017
3018 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
3019 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
3020
3021 if (term.c.x+width > term.col) {
3022 tnewline(1);
3023 gp = &term.line[term.c.y][term.c.x];
3024 }
3025
3026 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
3027
3028 if (width == 2) {
3029 gp->mode |= ATTR_WIDE;
3030 if (term.c.x+1 < term.col) {
3031 gp[1].u = '\0';
3032 gp[1].mode = ATTR_WDUMMY;
3033 }
3034 }
3035 if (term.c.x+width < term.col) {
3036 tmoveto(term.c.x+width, term.c.y);
3037 } else {
3038 term.c.state |= CURSOR_WRAPNEXT;
3039 }
3040 }
3041
3042 void
3043 tresize(int col, int row)
3044 {
3045 int i;
3046 int minrow = MIN(row, term.row);
3047 int mincol = MIN(col, term.col);
3048 int *bp;
3049 TCursor c;
3050
3051 if (col < 1 || row < 1) {
3052 fprintf(stderr,
3053 "tresize: error resizing to %dx%d\n", col, row);
3054 return;
3055 }
3056
3057 /*
3058 * slide screen to keep cursor where we expect it -
3059 * tscrollup would work here, but we can optimize to
3060 * memmove because we're freeing the earlier lines
3061 */
3062 for (i = 0; i <= term.c.y - row; i++) {
3063 free(term.line[i]);
3064 free(term.alt[i]);
3065 }
3066 /* ensure that both src and dst are not NULL */
3067 if (i > 0) {
3068 memmove(term.line, term.line + i, row * sizeof(Line));
3069 memmove(term.alt, term.alt + i, row * sizeof(Line));
3070 }
3071 for (i += row; i < term.row; i++) {
3072 free(term.line[i]);
3073 free(term.alt[i]);
3074 }
3075
3076 /* resize to new width */
3077 term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
3078
3079 /* resize to new height */
3080 term.line = xrealloc(term.line, row * sizeof(Line));
3081 term.alt = xrealloc(term.alt, row * sizeof(Line));
3082 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
3083 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
3084
3085 /* resize each row to new width, zero-pad if needed */
3086 for (i = 0; i < minrow; i++) {
3087 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
3088 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
3089 }
3090
3091 /* allocate any new rows */
3092 for (/* i == minrow */; i < row; i++) {
3093 term.line[i] = xmalloc(col * sizeof(Glyph));
3094 term.alt[i] = xmalloc(col * sizeof(Glyph));
3095 }
3096 if (col > term.col) {
3097 bp = term.tabs + term.col;
3098
3099 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
3100 while (--bp > term.tabs && !*bp)
3101 /* nothing */ ;
3102 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
3103 *bp = 1;
3104 }
3105 /* update terminal size */
3106 term.col = col;
3107 term.row = row;
3108 /* reset scrolling region */
3109 tsetscroll(0, row-1);
3110 /* make use of the LIMIT in tmoveto */
3111 tmoveto(term.c.x, term.c.y);
3112 /* Clearing both screens (it makes dirty all lines) */
3113 c = term.c;
3114 for (i = 0; i < 2; i++) {
3115 if (mincol < col && 0 < minrow) {
3116 tclearregion(mincol, 0, col - 1, minrow - 1);
3117 }
3118 if (0 < col && minrow < row) {
3119 tclearregion(0, minrow, col - 1, row - 1);
3120 }
3121 tswapscreen();
3122 tcursor(CURSOR_LOAD);
3123 }
3124 term.c = c;
3125 }
3126
3127 void
3128 xresize(int col, int row)
3129 {
3130 xw.tw = MAX(1, col * xw.cw);
3131 xw.th = MAX(1, row * xw.ch);
3132
3133 XFreePixmap(xw.dpy, xw.buf);
3134 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3135 DefaultDepth(xw.dpy, xw.scr));
3136 XftDrawChange(xw.draw, xw.buf);
3137 xclear(0, 0, xw.w, xw.h);
3138 }
3139
3140 ushort
3141 sixd_to_16bit(int x)
3142 {
3143 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
3144 }
3145
3146 int
3147 xloadcolor(int i, const char *name, Color *ncolor)
3148 {
3149 XRenderColor color = { .alpha = 0xffff };
3150
3151 if (!name) {
3152 if (BETWEEN(i, 16, 255)) { /* 256 color */
3153 if (i < 6*6*6+16) { /* same colors as xterm */
3154 color.red = sixd_to_16bit( ((i-16)/36)%6 );
3155 color.green = sixd_to_16bit( ((i-16)/6) %6 );
3156 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
3157 } else { /* greyscale */
3158 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
3159 color.green = color.blue = color.red;
3160 }
3161 return XftColorAllocValue(xw.dpy, xw.vis,
3162 xw.cmap, &color, ncolor);
3163 } else
3164 name = colorname[i];
3165 }
3166
3167 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
3168 }
3169
3170 void
3171 xloadcols(void)
3172 {
3173 int i;
3174 static int loaded;
3175 Color *cp;
3176
3177 if (loaded) {
3178 for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
3179 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
3180 }
3181
3182 for (i = 0; i < LEN(dc.col); i++)
3183 if (!xloadcolor(i, NULL, &dc.col[i])) {
3184 if (colorname[i])
3185 die("Could not allocate color '%s'\n", colorname[i]);
3186 else
3187 die("Could not allocate color %d\n", i);
3188 }
3189 loaded = 1;
3190 }
3191
3192 int
3193 xsetcolorname(int x, const char *name)
3194 {
3195 Color ncolor;
3196
3197 if (!BETWEEN(x, 0, LEN(dc.col)))
3198 return 1;
3199
3200
3201 if (!xloadcolor(x, name, &ncolor))
3202 return 1;
3203
3204 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
3205 dc.col[x] = ncolor;
3206
3207 return 0;
3208 }
3209
3210 void
3211 xtermclear(int col1, int row1, int col2, int row2)
3212 {
3213 XftDrawRect(xw.draw,
3214 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
3215 borderpx + col1 * xw.cw,
3216 borderpx + row1 * xw.ch,
3217 (col2-col1+1) * xw.cw,
3218 (row2-row1+1) * xw.ch);
3219 }
3220
3221 /*
3222 * Absolute coordinates.
3223 */
3224 void
3225 xclear(int x1, int y1, int x2, int y2)
3226 {
3227 XftDrawRect(xw.draw,
3228 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
3229 x1, y1, x2-x1, y2-y1);
3230 }
3231
3232 void
3233 xhints(void)
3234 {
3235 XClassHint class = {opt_class ? opt_class : termname, termname};
3236 XWMHints wm = {.flags = InputHint, .input = 1};
3237 XSizeHints *sizeh = NULL;
3238
3239 sizeh = XAllocSizeHints();
3240
3241 sizeh->flags = PSize | PResizeInc | PBaseSize;
3242 sizeh->height = xw.h;
3243 sizeh->width = xw.w;
3244 sizeh->height_inc = xw.ch;
3245 sizeh->width_inc = xw.cw;
3246 sizeh->base_height = 2 * borderpx;
3247 sizeh->base_width = 2 * borderpx;
3248 if (xw.isfixed) {
3249 sizeh->flags |= PMaxSize | PMinSize;
3250 sizeh->min_width = sizeh->max_width = xw.w;
3251 sizeh->min_height = sizeh->max_height = xw.h;
3252 }
3253 if (xw.gm & (XValue|YValue)) {
3254 sizeh->flags |= USPosition | PWinGravity;
3255 sizeh->x = xw.l;
3256 sizeh->y = xw.t;
3257 sizeh->win_gravity = xgeommasktogravity(xw.gm);
3258 }
3259
3260 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
3261 &class);
3262 XFree(sizeh);
3263 }
3264
3265 int
3266 xgeommasktogravity(int mask)
3267 {
3268 switch (mask & (XNegative|YNegative)) {
3269 case 0:
3270 return NorthWestGravity;
3271 case XNegative:
3272 return NorthEastGravity;
3273 case YNegative:
3274 return SouthWestGravity;
3275 }
3276
3277 return SouthEastGravity;
3278 }
3279
3280 int
3281 xloadfont(Font *f, FcPattern *pattern)
3282 {
3283 FcPattern *match;
3284 FcResult result;
3285
3286 match = FcFontMatch(NULL, pattern, &result);
3287 if (!match)
3288 return 1;
3289
3290 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
3291 FcPatternDestroy(match);
3292 return 1;
3293 }
3294
3295 f->set = NULL;
3296 f->pattern = FcPatternDuplicate(pattern);
3297
3298 f->ascent = f->match->ascent;
3299 f->descent = f->match->descent;
3300 f->lbearing = 0;
3301 f->rbearing = f->match->max_advance_width;
3302
3303 f->height = f->ascent + f->descent;
3304 f->width = f->lbearing + f->rbearing;
3305
3306 return 0;
3307 }
3308
3309 void
3310 xloadfonts(char *fontstr, double fontsize)
3311 {
3312 FcPattern *pattern;
3313 double fontval;
3314 float ceilf(float);
3315
3316 if (fontstr[0] == '-') {
3317 pattern = XftXlfdParse(fontstr, False, False);
3318 } else {
3319 pattern = FcNameParse((FcChar8 *)fontstr);
3320 }
3321
3322 if (!pattern)
3323 die("st: can't open font %s\n", fontstr);
3324
3325 if (fontsize > 1) {
3326 FcPatternDel(pattern, FC_PIXEL_SIZE);
3327 FcPatternDel(pattern, FC_SIZE);
3328 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
3329 usedfontsize = fontsize;
3330 } else {
3331 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
3332 FcResultMatch) {
3333 usedfontsize = fontval;
3334 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
3335 FcResultMatch) {
3336 usedfontsize = -1;
3337 } else {
3338 /*
3339 * Default font size is 12, if none given. This is to
3340 * have a known usedfontsize value.
3341 */
3342 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
3343 usedfontsize = 12;
3344 }
3345 defaultfontsize = usedfontsize;
3346 }
3347
3348 FcConfigSubstitute(0, pattern, FcMatchPattern);
3349 FcDefaultSubstitute(pattern);
3350
3351 if (xloadfont(&dc.font, pattern))
3352 die("st: can't open font %s\n", fontstr);
3353
3354 if (usedfontsize < 0) {
3355 FcPatternGetDouble(dc.font.match->pattern,
3356 FC_PIXEL_SIZE, 0, &fontval);
3357 usedfontsize = fontval;
3358 if (fontsize == 0)
3359 defaultfontsize = fontval;
3360 }
3361
3362 /* Setting character width and height. */
3363 xw.cw = ceilf(dc.font.width * cwscale);
3364 xw.ch = ceilf(dc.font.height * chscale);
3365
3366 FcPatternDel(pattern, FC_SLANT);
3367 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
3368 if (xloadfont(&dc.ifont, pattern))
3369 die("st: can't open font %s\n", fontstr);
3370
3371 FcPatternDel(pattern, FC_WEIGHT);
3372 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
3373 if (xloadfont(&dc.ibfont, pattern))
3374 die("st: can't open font %s\n", fontstr);
3375
3376 FcPatternDel(pattern, FC_SLANT);
3377 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
3378 if (xloadfont(&dc.bfont, pattern))
3379 die("st: can't open font %s\n", fontstr);
3380
3381 FcPatternDestroy(pattern);
3382 }
3383
3384 void
3385 xunloadfont(Font *f)
3386 {
3387 XftFontClose(xw.dpy, f->match);
3388 FcPatternDestroy(f->pattern);
3389 if (f->set)
3390 FcFontSetDestroy(f->set);
3391 }
3392
3393 void
3394 xunloadfonts(void)
3395 {
3396 /* Free the loaded fonts in the font cache. */
3397 while (frclen > 0)
3398 XftFontClose(xw.dpy, frc[--frclen].font);
3399
3400 xunloadfont(&dc.font);
3401 xunloadfont(&dc.bfont);
3402 xunloadfont(&dc.ifont);
3403 xunloadfont(&dc.ibfont);
3404 }
3405
3406 void
3407 xzoom(const Arg *arg)
3408 {
3409 Arg larg;
3410
3411 larg.f = usedfontsize + arg->f;
3412 xzoomabs(&larg);
3413 }
3414
3415 void
3416 xzoomabs(const Arg *arg)
3417 {
3418 xunloadfonts();
3419 xloadfonts(usedfont, arg->f);
3420 cresize(0, 0);
3421 redraw();
3422 xhints();
3423 }
3424
3425 void
3426 xzoomreset(const Arg *arg)
3427 {
3428 Arg larg;
3429
3430 if (defaultfontsize > 0) {
3431 larg.f = defaultfontsize;
3432 xzoomabs(&larg);
3433 }
3434 }
3435
3436 void
3437 xinit(void)
3438 {
3439 XGCValues gcvalues;
3440 Cursor cursor;
3441 Window parent;
3442 pid_t thispid = getpid();
3443 XColor xmousefg, xmousebg;
3444
3445 if (!(xw.dpy = XOpenDisplay(NULL)))
3446 die("Can't open display\n");
3447 xw.scr = XDefaultScreen(xw.dpy);
3448 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
3449
3450 /* font */
3451 if (!FcInit())
3452 die("Could not init fontconfig.\n");
3453
3454 usedfont = (opt_font == NULL)? font : opt_font;
3455 xloadfonts(usedfont, 0);
3456
3457 /* colors */
3458 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
3459 xloadcols();
3460
3461 /* adjust fixed window geometry */
3462 xw.w = 2 * borderpx + term.col * xw.cw;
3463 xw.h = 2 * borderpx + term.row * xw.ch;
3464 if (xw.gm & XNegative)
3465 xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
3466 if (xw.gm & YNegative)
3467 xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
3468
3469 /* Events */
3470 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
3471 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
3472 xw.attrs.bit_gravity = NorthWestGravity;
3473 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
3474 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
3475 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
3476 xw.attrs.colormap = xw.cmap;
3477
3478 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
3479 parent = XRootWindow(xw.dpy, xw.scr);
3480 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
3481 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
3482 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
3483 | CWEventMask | CWColormap, &xw.attrs);
3484
3485 memset(&gcvalues, 0, sizeof(gcvalues));
3486 gcvalues.graphics_exposures = False;
3487 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
3488 &gcvalues);
3489 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
3490 DefaultDepth(xw.dpy, xw.scr));
3491 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
3492 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
3493
3494 /* Xft rendering context */
3495 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
3496
3497 /* input methods */
3498 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3499 XSetLocaleModifiers("@im=local");
3500 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
3501 XSetLocaleModifiers("@im=");
3502 if ((xw.xim = XOpenIM(xw.dpy,
3503 NULL, NULL, NULL)) == NULL) {
3504 die("XOpenIM failed. Could not open input"
3505 " device.\n");
3506 }
3507 }
3508 }
3509 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
3510 | XIMStatusNothing, XNClientWindow, xw.win,
3511 XNFocusWindow, xw.win, NULL);
3512 if (xw.xic == NULL)
3513 die("XCreateIC failed. Could not obtain input method.\n");
3514
3515 /* white cursor, black outline */
3516 cursor = XCreateFontCursor(xw.dpy, mouseshape);
3517 XDefineCursor(xw.dpy, xw.win, cursor);
3518
3519 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
3520 xmousefg.red = 0xffff;
3521 xmousefg.green = 0xffff;
3522 xmousefg.blue = 0xffff;
3523 }
3524
3525 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
3526 xmousebg.red = 0x0000;
3527 xmousebg.green = 0x0000;
3528 xmousebg.blue = 0x0000;
3529 }
3530
3531 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
3532
3533 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
3534 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
3535 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
3536 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
3537
3538 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
3539 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
3540 PropModeReplace, (uchar *)&thispid, 1);
3541
3542 xresettitle();
3543 XMapWindow(xw.dpy, xw.win);
3544 xhints();
3545 XSync(xw.dpy, False);
3546 }
3547
3548 int
3549 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
3550 {
3551 float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
3552 ushort mode, prevmode = USHRT_MAX;
3553 Font *font = &dc.font;
3554 int frcflags = FRC_NORMAL;
3555 float runewidth = xw.cw;
3556 Rune rune;
3557 FT_UInt glyphidx;
3558 FcResult fcres;
3559 FcPattern *fcpattern, *fontpattern;
3560 FcFontSet *fcsets[] = { NULL };
3561 FcCharSet *fccharset;
3562 int i, f, numspecs = 0;
3563
3564 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
3565 /* Fetch rune and mode for current glyph. */
3566 rune = glyphs[i].u;
3567 mode = glyphs[i].mode;
3568
3569 /* Skip dummy wide-character spacing. */
3570 if (mode == ATTR_WDUMMY)
3571 continue;
3572
3573 /* Determine font for glyph if different from previous glyph. */
3574 if (prevmode != mode) {
3575 prevmode = mode;
3576 font = &dc.font;
3577 frcflags = FRC_NORMAL;
3578 runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
3579 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
3580 font = &dc.ibfont;
3581 frcflags = FRC_ITALICBOLD;
3582 } else if (mode & ATTR_ITALIC) {
3583 font = &dc.ifont;
3584 frcflags = FRC_ITALIC;
3585 } else if (mode & ATTR_BOLD) {
3586 font = &dc.bfont;
3587 frcflags = FRC_BOLD;
3588 }
3589 yp = winy + font->ascent;
3590 }
3591
3592 /* Lookup character index with default font. */
3593 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
3594 if (glyphidx) {
3595 specs[numspecs].font = font->match;
3596 specs[numspecs].glyph = glyphidx;
3597 specs[numspecs].x = (short)xp;
3598 specs[numspecs].y = (short)yp;
3599 xp += runewidth;
3600 numspecs++;
3601 continue;
3602 }
3603
3604 /* Fallback on font cache, search the font cache for match. */
3605 for (f = 0; f < frclen; f++) {
3606 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
3607 /* Everything correct. */
3608 if (glyphidx && frc[f].flags == frcflags)
3609 break;
3610 /* We got a default font for a not found glyph. */
3611 if (!glyphidx && frc[f].flags == frcflags
3612 && frc[f].unicodep == rune) {
3613 break;
3614 }
3615 }
3616
3617 /* Nothing was found. Use fontconfig to find matching font. */
3618 if (f >= frclen) {
3619 if (!font->set)
3620 font->set = FcFontSort(0, font->pattern,
3621 1, 0, &fcres);
3622 fcsets[0] = font->set;
3623
3624 /*
3625 * Nothing was found in the cache. Now use
3626 * some dozen of Fontconfig calls to get the
3627 * font for one single character.
3628 *
3629 * Xft and fontconfig are design failures.
3630 */
3631 fcpattern = FcPatternDuplicate(font->pattern);
3632 fccharset = FcCharSetCreate();
3633
3634 FcCharSetAddChar(fccharset, rune);
3635 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3636 fccharset);
3637 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
3638
3639 FcConfigSubstitute(0, fcpattern,
3640 FcMatchPattern);
3641 FcDefaultSubstitute(fcpattern);
3642
3643 fontpattern = FcFontSetMatch(0, fcsets, 1,
3644 fcpattern, &fcres);
3645
3646 /*
3647 * Overwrite or create the new cache entry.
3648 */
3649 if (frclen >= LEN(frc)) {
3650 frclen = LEN(frc) - 1;
3651 XftFontClose(xw.dpy, frc[frclen].font);
3652 frc[frclen].unicodep = 0;
3653 }
3654
3655 frc[frclen].font = XftFontOpenPattern(xw.dpy,
3656 fontpattern);
3657 frc[frclen].flags = frcflags;
3658 frc[frclen].unicodep = rune;
3659
3660 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
3661
3662 f = frclen;
3663 frclen++;
3664
3665 FcPatternDestroy(fcpattern);
3666 FcCharSetDestroy(fccharset);
3667 }
3668
3669 specs[numspecs].font = frc[f].font;
3670 specs[numspecs].glyph = glyphidx;
3671 specs[numspecs].x = (short)xp;
3672 specs[numspecs].y = (short)(winy + frc[f].font->ascent);
3673 xp += runewidth;
3674 numspecs++;
3675 }
3676
3677 return numspecs;
3678 }
3679
3680 void
3681 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
3682 {
3683 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
3684 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
3685 width = charlen * xw.cw;
3686 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
3687 XRenderColor colfg, colbg;
3688 XRectangle r;
3689
3690 /* Determine foreground and background colors based on mode. */
3691 if (base.fg == defaultfg) {
3692 if (base.mode & ATTR_ITALIC)
3693 base.fg = defaultitalic;
3694 else if ((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
3695 base.fg = defaultitalic;
3696 else if (base.mode & ATTR_UNDERLINE)
3697 base.fg = defaultunderline;
3698 }
3699
3700 if (IS_TRUECOL(base.fg)) {
3701 colfg.alpha = 0xffff;
3702 colfg.red = TRUERED(base.fg);
3703 colfg.green = TRUEGREEN(base.fg);
3704 colfg.blue = TRUEBLUE(base.fg);
3705 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
3706 fg = &truefg;
3707 } else {
3708 fg = &dc.col[base.fg];
3709 }
3710
3711 if (IS_TRUECOL(base.bg)) {
3712 colbg.alpha = 0xffff;
3713 colbg.green = TRUEGREEN(base.bg);
3714 colbg.red = TRUERED(base.bg);
3715 colbg.blue = TRUEBLUE(base.bg);
3716 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
3717 bg = &truebg;
3718 } else {
3719 bg = &dc.col[base.bg];
3720 }
3721
3722 /* Change basic system colors [0-7] to bright system colors [8-15] */
3723 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
3724 fg = &dc.col[base.fg + 8];
3725
3726 if (IS_SET(MODE_REVERSE)) {
3727 if (fg == &dc.col[defaultfg]) {
3728 fg = &dc.col[defaultbg];
3729 } else {
3730 colfg.red = ~fg->color.red;
3731 colfg.green = ~fg->color.green;
3732 colfg.blue = ~fg->color.blue;
3733 colfg.alpha = fg->color.alpha;
3734 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
3735 &revfg);
3736 fg = &revfg;
3737 }
3738
3739 if (bg == &dc.col[defaultbg]) {
3740 bg = &dc.col[defaultfg];
3741 } else {
3742 colbg.red = ~bg->color.red;
3743 colbg.green = ~bg->color.green;
3744 colbg.blue = ~bg->color.blue;
3745 colbg.alpha = bg->color.alpha;
3746 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
3747 &revbg);
3748 bg = &revbg;
3749 }
3750 }
3751
3752 if (base.mode & ATTR_REVERSE) {
3753 temp = fg;
3754 fg = bg;
3755 bg = temp;
3756 }
3757
3758 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
3759 colfg.red = fg->color.red / 2;
3760 colfg.green = fg->color.green / 2;
3761 colfg.blue = fg->color.blue / 2;
3762 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
3763 fg = &revfg;
3764 }
3765
3766 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
3767 fg = bg;
3768
3769 if (base.mode & ATTR_INVISIBLE)
3770 fg = bg;
3771
3772 /* Intelligent cleaning up of the borders. */
3773 if (x == 0) {
3774 xclear(0, (y == 0)? 0 : winy, borderpx,
3775 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
3776 }
3777 if (x + charlen >= term.col) {
3778 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
3779 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
3780 }
3781 if (y == 0)
3782 xclear(winx, 0, winx + width, borderpx);
3783 if (y == term.row-1)
3784 xclear(winx, winy + xw.ch, winx + width, xw.h);
3785
3786 /* Clean up the region we want to draw to. */
3787 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
3788
3789 /* Set the clip region because Xft is sometimes dirty. */
3790 r.x = 0;
3791 r.y = 0;
3792 r.height = xw.ch;
3793 r.width = width;
3794 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3795
3796 /* Render the glyphs. */
3797 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
3798
3799 /* Render underline and strikethrough. */
3800 if (base.mode & ATTR_UNDERLINE) {
3801 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
3802 width, 1);
3803 }
3804
3805 if (base.mode & ATTR_STRUCK) {
3806 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
3807 width, 1);
3808 }
3809
3810 /* Reset clip to none. */
3811 XftDrawSetClip(xw.draw, 0);
3812 }
3813
3814 void
3815 xdrawglyph(Glyph g, int x, int y)
3816 {
3817 int numspecs;
3818 XftGlyphFontSpec spec;
3819 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
3820 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
3821 }
3822
3823 void
3824 xdrawcursor(void)
3825 {
3826 static int oldx = 0, oldy = 0;
3827 int curx;
3828 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs};
3829
3830 LIMIT(oldx, 0, term.col-1);
3831 LIMIT(oldy, 0, term.row-1);
3832
3833 curx = term.c.x;
3834
3835 /* adjust position if in dummy */
3836 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
3837 oldx--;
3838 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
3839 curx--;
3840
3841 g.u = term.line[term.c.y][term.c.x].u;
3842
3843 /* remove the old cursor */
3844 xdrawglyph(term.line[oldy][oldx], oldx, oldy);
3845
3846 if (IS_SET(MODE_HIDE))
3847 return;
3848
3849 /* draw the new one */
3850 if (xw.state & WIN_FOCUSED) {
3851 switch (xw.cursor) {
3852 case 0: /* Blinking Block */
3853 case 1: /* Blinking Block (Default) */
3854 case 2: /* Steady Block */
3855 if (IS_SET(MODE_REVERSE)) {
3856 g.mode |= ATTR_REVERSE;
3857 g.fg = defaultcs;
3858 g.bg = defaultfg;
3859 }
3860
3861 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
3862 xdrawglyph(g, term.c.x, term.c.y);
3863 break;
3864 case 3: /* Blinking Underline */
3865 case 4: /* Steady Underline */
3866 XftDrawRect(xw.draw, &dc.col[defaultcs],
3867 borderpx + curx * xw.cw,
3868 borderpx + (term.c.y + 1) * xw.ch - cursorthickness,
3869 xw.cw, cursorthickness);
3870 break;
3871 case 5: /* Blinking bar */
3872 case 6: /* Steady bar */
3873 XftDrawRect(xw.draw, &dc.col[defaultcs],
3874 borderpx + curx * xw.cw,
3875 borderpx + term.c.y * xw.ch,
3876 cursorthickness, xw.ch);
3877 break;
3878 }
3879 } else {
3880 XftDrawRect(xw.draw, &dc.col[defaultcs],
3881 borderpx + curx * xw.cw,
3882 borderpx + term.c.y * xw.ch,
3883 xw.cw - 1, 1);
3884 XftDrawRect(xw.draw, &dc.col[defaultcs],
3885 borderpx + curx * xw.cw,
3886 borderpx + term.c.y * xw.ch,
3887 1, xw.ch - 1);
3888 XftDrawRect(xw.draw, &dc.col[defaultcs],
3889 borderpx + (curx + 1) * xw.cw - 1,
3890 borderpx + term.c.y * xw.ch,
3891 1, xw.ch - 1);
3892 XftDrawRect(xw.draw, &dc.col[defaultcs],
3893 borderpx + curx * xw.cw,
3894 borderpx + (term.c.y + 1) * xw.ch - 1,
3895 xw.cw, 1);
3896 }
3897 oldx = curx, oldy = term.c.y;
3898 }
3899
3900
3901 void
3902 xsettitle(char *p)
3903 {
3904 XTextProperty prop;
3905
3906 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3907 &prop);
3908 XSetWMName(xw.dpy, xw.win, &prop);
3909 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
3910 XFree(prop.value);
3911 }
3912
3913 void
3914 xresettitle(void)
3915 {
3916 xsettitle(opt_title ? opt_title : "st");
3917 }
3918
3919 void
3920 redraw(void)
3921 {
3922 tfulldirt();
3923 draw();
3924 }
3925
3926 void
3927 draw(void)
3928 {
3929 drawregion(0, 0, term.col, term.row);
3930 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3931 xw.h, 0, 0);
3932 XSetForeground(xw.dpy, dc.gc,
3933 dc.col[IS_SET(MODE_REVERSE)?
3934 defaultfg : defaultbg].pixel);
3935 }
3936
3937 void
3938 drawregion(int x1, int y1, int x2, int y2)
3939 {
3940 int i, x, y, ox, numspecs;
3941 Glyph base, new;
3942 XftGlyphFontSpec* specs;
3943 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
3944
3945 if (!(xw.state & WIN_VISIBLE))
3946 return;
3947
3948 for (y = y1; y < y2; y++) {
3949 if (!term.dirty[y])
3950 continue;
3951
3952 xtermclear(0, y, term.col, y);
3953 term.dirty[y] = 0;
3954
3955 specs = term.specbuf;
3956 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
3957
3958 i = ox = 0;
3959 for (x = x1; x < x2 && i < numspecs; x++) {
3960 new = term.line[y][x];
3961 if (new.mode == ATTR_WDUMMY)
3962 continue;
3963 if (ena_sel && selected(x, y))
3964 new.mode ^= ATTR_REVERSE;
3965 if (i > 0 && ATTRCMP(base, new)) {
3966 xdrawglyphfontspecs(specs, base, i, ox, y);
3967 specs += i;
3968 numspecs -= i;
3969 i = 0;
3970 }
3971 if (i == 0) {
3972 ox = x;
3973 base = new;
3974 }
3975 i++;
3976 }
3977 if (i > 0)
3978 xdrawglyphfontspecs(specs, base, i, ox, y);
3979 }
3980 xdrawcursor();
3981 }
3982
3983 void
3984 expose(XEvent *ev)
3985 {
3986 redraw();
3987 }
3988
3989 void
3990 visibility(XEvent *ev)
3991 {
3992 XVisibilityEvent *e = &ev->xvisibility;
3993
3994 MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
3995 }
3996
3997 void
3998 unmap(XEvent *ev)
3999 {
4000 xw.state &= ~WIN_VISIBLE;
4001 }
4002
4003 void
4004 xsetpointermotion(int set)
4005 {
4006 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
4007 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
4008 }
4009
4010 void
4011 xseturgency(int add)
4012 {
4013 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
4014
4015 MODBIT(h->flags, add, XUrgencyHint);
4016 XSetWMHints(xw.dpy, xw.win, h);
4017 XFree(h);
4018 }
4019
4020 void
4021 focus(XEvent *ev)
4022 {
4023 XFocusChangeEvent *e = &ev->xfocus;
4024
4025 if (e->mode == NotifyGrab)
4026 return;
4027
4028 if (ev->type == FocusIn) {
4029 XSetICFocus(xw.xic);
4030 xw.state |= WIN_FOCUSED;
4031 xseturgency(0);
4032 if (IS_SET(MODE_FOCUS))
4033 ttywrite("\033[I", 3);
4034 } else {
4035 XUnsetICFocus(xw.xic);
4036 xw.state &= ~WIN_FOCUSED;
4037 if (IS_SET(MODE_FOCUS))
4038 ttywrite("\033[O", 3);
4039 }
4040 }
4041
4042 int
4043 match(uint mask, uint state)
4044 {
4045 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
4046 }
4047
4048 void
4049 numlock(const Arg *dummy)
4050 {
4051 term.numlock ^= 1;
4052 }
4053
4054 char*
4055 kmap(KeySym k, uint state)
4056 {
4057 Key *kp;
4058 int i;
4059
4060 /* Check for mapped keys out of X11 function keys. */
4061 for (i = 0; i < LEN(mappedkeys); i++) {
4062 if (mappedkeys[i] == k)
4063 break;
4064 }
4065 if (i == LEN(mappedkeys)) {
4066 if ((k & 0xFFFF) < 0xFD00)
4067 return NULL;
4068 }
4069
4070 for (kp = key; kp < key + LEN(key); kp++) {
4071 if (kp->k != k)
4072 continue;
4073
4074 if (!match(kp->mask, state))
4075 continue;
4076
4077 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
4078 continue;
4079 if (term.numlock && kp->appkey == 2)
4080 continue;
4081
4082 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
4083 continue;
4084
4085 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
4086 continue;
4087
4088 return kp->s;
4089 }
4090
4091 return NULL;
4092 }
4093
4094 void
4095 kpress(XEvent *ev)
4096 {
4097 XKeyEvent *e = &ev->xkey;
4098 KeySym ksym;
4099 char buf[32], *customkey;
4100 int len;
4101 Rune c;
4102 Status status;
4103 Shortcut *bp;
4104
4105 if (IS_SET(MODE_KBDLOCK))
4106 return;
4107
4108 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
4109 /* 1. shortcuts */
4110 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
4111 if (ksym == bp->keysym && match(bp->mod, e->state)) {
4112 bp->func(&(bp->arg));
4113 return;
4114 }
4115 }
4116
4117 /* 2. custom keys from config.h */
4118 if ((customkey = kmap(ksym, e->state))) {
4119 ttysend(customkey, strlen(customkey));
4120 return;
4121 }
4122
4123 /* 3. composed string from input method */
4124 if (len == 0)
4125 return;
4126 if (len == 1 && e->state & Mod1Mask) {
4127 if (IS_SET(MODE_8BIT)) {
4128 if (*buf < 0177) {
4129 c = *buf | 0x80;
4130 len = utf8encode(c, buf);
4131 }
4132 } else {
4133 buf[1] = buf[0];
4134 buf[0] = '\033';
4135 len = 2;
4136 }
4137 }
4138 ttysend(buf, len);
4139 }
4140
4141
4142 void
4143 cmessage(XEvent *e)
4144 {
4145 /*
4146 * See xembed specs
4147 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
4148 */
4149 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
4150 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
4151 xw.state |= WIN_FOCUSED;
4152 xseturgency(0);
4153 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
4154 xw.state &= ~WIN_FOCUSED;
4155 }
4156 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
4157 /* Send SIGHUP to shell */
4158 kill(pid, SIGHUP);
4159 exit(0);
4160 }
4161 }
4162
4163 void
4164 cresize(int width, int height)
4165 {
4166 int col, row;
4167
4168 if (width != 0)
4169 xw.w = width;
4170 if (height != 0)
4171 xw.h = height;
4172
4173 col = (xw.w - 2 * borderpx) / xw.cw;
4174 row = (xw.h - 2 * borderpx) / xw.ch;
4175
4176 tresize(col, row);
4177 xresize(col, row);
4178 ttyresize();
4179 }
4180
4181 void
4182 resize(XEvent *e)
4183 {
4184 if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
4185 return;
4186
4187 cresize(e->xconfigure.width, e->xconfigure.height);
4188 }
4189
4190 void
4191 run(void)
4192 {
4193 XEvent ev;
4194 int w = xw.w, h = xw.h;
4195 fd_set rfd;
4196 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
4197 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
4198 long deltatime;
4199
4200 /* Waiting for window mapping */
4201 do {
4202 XNextEvent(xw.dpy, &ev);
4203 /*
4204 * This XFilterEvent call is required because of XOpenIM. It
4205 * does filter out the key event and some client message for
4206 * the input method too.
4207 */
4208 if (XFilterEvent(&ev, None))
4209 continue;
4210 if (ev.type == ConfigureNotify) {
4211 w = ev.xconfigure.width;
4212 h = ev.xconfigure.height;
4213 }
4214 } while (ev.type != MapNotify);
4215
4216 ttynew();
4217 cresize(w, h);
4218
4219 clock_gettime(CLOCK_MONOTONIC, &last);
4220 lastblink = last;
4221
4222 for (xev = actionfps;;) {
4223 FD_ZERO(&rfd);
4224 FD_SET(cmdfd, &rfd);
4225 FD_SET(xfd, &rfd);
4226
4227 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
4228 if (errno == EINTR)
4229 continue;
4230 die("select failed: %s\n", strerror(errno));
4231 }
4232 if (FD_ISSET(cmdfd, &rfd)) {
4233 ttyread();
4234 if (blinktimeout) {
4235 blinkset = tattrset(ATTR_BLINK);
4236 if (!blinkset)
4237 MODBIT(term.mode, 0, MODE_BLINK);
4238 }
4239 }
4240
4241 if (FD_ISSET(xfd, &rfd))
4242 xev = actionfps;
4243
4244 clock_gettime(CLOCK_MONOTONIC, &now);
4245 drawtimeout.tv_sec = 0;
4246 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
4247 tv = &drawtimeout;
4248
4249 dodraw = 0;
4250 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
4251 tsetdirtattr(ATTR_BLINK);
4252 term.mode ^= MODE_BLINK;
4253 lastblink = now;
4254 dodraw = 1;
4255 }
4256 deltatime = TIMEDIFF(now, last);
4257 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
4258 dodraw = 1;
4259 last = now;
4260 }
4261
4262 if (dodraw) {
4263 while (XPending(xw.dpy)) {
4264 XNextEvent(xw.dpy, &ev);
4265 if (XFilterEvent(&ev, None))
4266 continue;
4267 if (handler[ev.type])
4268 (handler[ev.type])(&ev);
4269 }
4270
4271 draw();
4272 XFlush(xw.dpy);
4273
4274 if (xev && !FD_ISSET(xfd, &rfd))
4275 xev--;
4276 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
4277 if (blinkset) {
4278 if (TIMEDIFF(now, lastblink) \
4279 > blinktimeout) {
4280 drawtimeout.tv_nsec = 1000;
4281 } else {
4282 drawtimeout.tv_nsec = (1E6 * \
4283 (blinktimeout - \
4284 TIMEDIFF(now,
4285 lastblink)));
4286 }
4287 drawtimeout.tv_sec = \
4288 drawtimeout.tv_nsec / 1E9;
4289 drawtimeout.tv_nsec %= (long)1E9;
4290 } else {
4291 tv = NULL;
4292 }
4293 }
4294 }
4295 }
4296 }
4297
4298 void
4299 usage(void)
4300 {
4301 die("%s " VERSION " (c) 2010-2015 st engineers\n"
4302 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4303 " [-i] [-t title] [-T title] [-w windowid] [-e command ...]"
4304 " [command ...]\n"
4305 " st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
4306 " [-i] [-t title] [-T title] [-w windowid] -l line"
4307 " [stty_args ...]\n",
4308 argv0);
4309 }
4310
4311 int
4312 main(int argc, char *argv[])
4313 {
4314 uint cols = 80, rows = 24;
4315
4316 xw.l = xw.t = 0;
4317 xw.isfixed = False;
4318 xw.cursor = 0;
4319
4320 ARGBEGIN {
4321 case 'a':
4322 allowaltscreen = 0;
4323 break;
4324 case 'c':
4325 opt_class = EARGF(usage());
4326 break;
4327 case 'e':
4328 if (argc > 0)
4329 --argc, ++argv;
4330 goto run;
4331 case 'f':
4332 opt_font = EARGF(usage());
4333 break;
4334 case 'g':
4335 xw.gm = XParseGeometry(EARGF(usage()),
4336 &xw.l, &xw.t, &cols, &rows);
4337 break;
4338 case 'i':
4339 xw.isfixed = 1;
4340 break;
4341 case 'o':
4342 opt_io = EARGF(usage());
4343 break;
4344 case 'l':
4345 opt_line = EARGF(usage());
4346 break;
4347 case 't':
4348 case 'T':
4349 opt_title = EARGF(usage());
4350 break;
4351 case 'w':
4352 opt_embed = EARGF(usage());
4353 break;
4354 case 'v':
4355 default:
4356 usage();
4357 } ARGEND;
4358
4359 run:
4360 if (argc > 0) {
4361 /* eat all remaining arguments */
4362 opt_cmd = argv;
4363 if (!opt_title && !opt_line)
4364 opt_title = basename(xstrdup(argv[0]));
4365 }
4366 setlocale(LC_CTYPE, "");
4367 XSetLocaleModifiers("");
4368 tnew(MAX(cols, 1), MAX(rows, 1));
4369 xinit();
4370 selinit();
4371 run();
4372
4373 return 0;
4374 }
4375